Search a number
-
+
103121202001 = 712114481281
BaseRepresentation
bin110000000001010000…
…0001010101101010001
3100212011200201211110211
41200002200022231101
53142143011431001
6115212341124121
710310303516536
oct1400240125521
9325150654424
10103121202001
113a808259394
1217b9b0b9641
13995534c02c
144dc37b6d8d
152a38270351
hex180280ab51

103121202001 has 4 divisors (see below), whose sum is σ = 103135690404. Its totient is φ = 103106713600.

The previous prime is 103121201959. The next prime is 103121202031. The reversal of 103121202001 is 100202121301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100202121301 = 591698341039.

It can be written as a sum of positive squares in 2 ways, for example, as 1966035600 + 101155166401 = 44340^2 + 318049^2 .

It is a cyclic number.

It is not a de Polignac number, because 103121202001 - 211 = 103121199953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103121202031) 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, 7233520 + ... + 7247761.

It is an arithmetic number, because the mean of its divisors is an integer number (25783922601).

Almost surely, 2103121202001 is an apocalyptic number.

It is an amenable number.

103121202001 is a deficient number, since it is larger than the sum of its proper divisors (14488403).

103121202001 is an equidigital number, since it uses as much as digits as its factorization.

103121202001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14488402.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 103121202001 its reverse (100202121301), we get a palindrome (203323323302).

The spelling of 103121202001 in words is "one hundred three billion, one hundred twenty-one million, two hundred two thousand, one".

Divisors: 1 7121 14481281 103121202001