Search a number
BaseRepresentation
bin1001000111001111110110…
…1100110100111010101001
31022110220200101210022010002
42101303331230310322221
52303132201222333001
633151102445032345
72052633626505224
oct221637554647251
938426611708102
1010020120121001
1132135666477a1
121159b71b556b5
13578b7c6a0173
14268d953625bb
151259a64da46b
hex91cfdb34ea9

10020120121001 has 4 divisors (see below), whose sum is σ = 10123420328532. Its totient is φ = 9916819913472.

The previous prime is 10020120120977. The next prime is 10020120121027. The reversal of 10020120121001 is 10012102102001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2386641855376 + 7633478265625 = 1544876^2 + 2762875^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020120121001 - 218 = 10020119858857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (10020120121201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51650103620 + ... + 51650103813.

It is an arithmetic number, because the mean of its divisors is an integer number (2530855082133).

Almost surely, 210020120121001 is an apocalyptic number.

It is an amenable number.

10020120121001 is a deficient number, since it is larger than the sum of its proper divisors (103300207531).

10020120121001 is an equidigital number, since it uses as much as digits as its factorization.

10020120121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103300207530.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10020120121001 its reverse (10012102102001), we get a palindrome (20032222223002).

It can be divided in two parts, 10020 and 120121001, that added together give a palindrome (120131021).

The spelling of 10020120121001 in words is "ten trillion, twenty billion, one hundred twenty million, one hundred twenty-one thousand, one".

Divisors: 1 97 103300207433 10020120121001