100012020010021 has 4 divisors (see below), whose sum is σ = 114299451440032. Its totient is φ = 85724588580012.

The previous prime is 100012020010003. The next prime is 100012020010109. The reversal of 100012020010021 is 120010020210001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100012020010021 - 2²³ = 100012011621413 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 (100012020013021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7143715714995 + ... + 7143715715008.

It is an arithmetic number, because the mean of its divisors is an integer number (28574862860008).

Almost surely, 2^{100012020010021} is an apocalyptic number.

It is an amenable number.

100012020010021 is a deficient number, since it is larger than the sum of its proper divisors (14287431430011).

100012020010021 is an equidigital number, since it uses as much as digits as its factorization.

100012020010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14287431430010.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 100012020010021 its reverse (120010020210001), we get a palindrome (220022040220022).

The spelling of 100012020010021 in words is "one hundred trillion, twelve billion, twenty million, ten thousand, twenty-one".