10121211201021 has 32 divisors (see below), whose sum is σ = 13952304317952. Its totient is φ = 6521897840640.

The previous prime is 10121211200987. The next prime is 10121211201043. The reversal of 10121211201021 is 12010211212101.

It is a happy number.

It is not a de Polignac number, because 10121211201021 - 2²⁵ = 10121177646589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10121211201221) 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 31 ways as a sum of consecutive naturals, for example, 33108156 + ... + 33412458.

It is an arithmetic number, because the mean of its divisors is an integer number (436009509936).

Almost surely, 2^{10121211201021} is an apocalyptic number.

It is an amenable number.

10121211201021 is a deficient number, since it is larger than the sum of its proper divisors (3831093116931).

10121211201021 is a wasteful number, since it uses less digits than its factorization.

10121211201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306853.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 10121211201021 its reverse (12010211212101), we get a palindrome (22131422413122).

The spelling of 10121211201021 in words is "ten trillion, one hundred twenty-one billion, two hundred eleven million, two hundred one thousand, twenty-one".