100023021001021 has 32 divisors (see below), whose sum is σ = 103415412481920. Its totient is φ = 96700862168064.

The previous prime is 100023021001009. The next prime is 100023021001037. The reversal of 100023021001021 is 120100120320001.

It is not a de Polignac number, because 100023021001021 - 2¹⁵ = 100023020968253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100023021000992 and 100023021001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100023021001051) 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, 944335561 + ... + 944441473.

It is an arithmetic number, because the mean of its divisors is an integer number (3231731640060).

Almost surely, 2^{100023021001021} is an apocalyptic number.

It is an amenable number.

100023021001021 is a deficient number, since it is larger than the sum of its proper divisors (3392391480899).

100023021001021 is a wasteful number, since it uses less digits than its factorization.

100023021001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107005.

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

Adding to 100023021001021 its reverse (120100120320001), we get a palindrome (220123141321022).

The spelling of 100023021001021 in words is "one hundred trillion, twenty-three billion, twenty-one million, one thousand, twenty-one".