100021012212021 has 16 divisors (see below), whose sum is σ = 134383850048448. Its totient is φ = 66169458492800.

The previous prime is 100021012212019. The next prime is 100021012212031. The reversal of 100021012212021 is 120212210120001.

It is a cyclic number.

It is not a de Polignac number, because 100021012212021 - 2¹ = 100021012212019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021012212031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7621351 + ... + 16066331.

It is an arithmetic number, because the mean of its divisors is an integer number (8398990628028).

Almost surely, 2^{100021012212021} is an apocalyptic number.

It is an amenable number.

100021012212021 is a deficient number, since it is larger than the sum of its proper divisors (34362837836427).

100021012212021 is a wasteful number, since it uses less digits than its factorization.

100021012212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8475252.

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

Adding to 100021012212021 its reverse (120212210120001), we get a palindrome (220233222332022).

The spelling of 100021012212021 in words is "one hundred trillion, twenty-one billion, twelve million, two hundred twelve thousand, twenty-one".