10100020123221 has 32 divisors (see below), whose sum is σ = 15448907347200. Its totient is φ = 5749543188480.

The previous prime is 10100020123153. The next prime is 10100020123229. The reversal of 10100020123221 is 12232102000101.

It is not a de Polignac number, because 10100020123221 - 2⁷ = 10100020123093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10100020123221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100020123229) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 82193695 + ... + 82316483.

It is an arithmetic number, because the mean of its divisors is an integer number (482778354600).

Almost surely, 2^{10100020123221} is an apocalyptic number.

It is an amenable number.

10100020123221 is a deficient number, since it is larger than the sum of its proper divisors (5348887223979).

10100020123221 is a wasteful number, since it uses less digits than its factorization.

10100020123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137629.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10100020123221 its reverse (12232102000101), we get a palindrome (22332122123322).

The spelling of 10100020123221 in words is "ten trillion, one hundred billion, twenty million, one hundred twenty-three thousand, two hundred twenty-one".