100020121122021 has 32 divisors (see below), whose sum is σ = 141770394455040. Its totient is φ = 62544773666304.

The previous prime is 100020121121989. The next prime is 100020121122037. The reversal of 100020121122021 is 120221121020001.

It is not a de Polignac number, because 100020121122021 - 2⁵ = 100020121121989 is a prime.

It is a super-2 number, since 2×100020121122021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100020121122041) 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, 27670005 + ... + 31075221.

It is an arithmetic number, because the mean of its divisors is an integer number (4430324826720).

Almost surely, 2^{100020121122021} is an apocalyptic number.

It is an amenable number.

100020121122021 is a deficient number, since it is larger than the sum of its proper divisors (41750273333019).

100020121122021 is a wasteful number, since it uses less digits than its factorization.

100020121122021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3410345.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100020121122021 its reverse (120221121020001), we get a palindrome (220241242142022).

The spelling of 100020121122021 in words is "one hundred trillion, twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, twenty-one".