10211220221101 has 4 divisors (see below), whose sum is σ = 10217519556604. Its totient is φ = 10204920885600.

The previous prime is 10211220221093. The next prime is 10211220221131. The reversal of 10211220221101 is 10112202211201.

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 2712193971876 + 7499026249225 = 1646874^2 + 2738435^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211220221101 - 2³ = 10211220221093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211220221131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3149665320 + ... + 3149668561.

It is an arithmetic number, because the mean of its divisors is an integer number (2554379889151).

Almost surely, 2^{10211220221101} is an apocalyptic number.

It is an amenable number.

10211220221101 is a deficient number, since it is larger than the sum of its proper divisors (6299335503).

10211220221101 is an equidigital number, since it uses as much as digits as its factorization.

10211220221101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6299335502.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10211220221101 its reverse (10112202211201), we get a palindrome (20323422432302).

The spelling of 10211220221101 in words is "ten trillion, two hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, one hundred one".