100212111202021 has 64 divisors (see below), whose sum is σ = 127771772083200. Its totient is φ = 76446216806400.

The previous prime is 100212111202003. The next prime is 100212111202051. The reversal of 100212111202021 is 120202111212001.

It is not a de Polignac number, because 100212111202021 - 2²³ = 100212102813413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100212111201986 and 100212111202004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100212111202051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10372845931 + ... + 10372855591.

It is an arithmetic number, because the mean of its divisors is an integer number (1996433938800).

Almost surely, 2^{100212111202021} is an apocalyptic number.

It is an amenable number.

100212111202021 is a deficient number, since it is larger than the sum of its proper divisors (27559660881179).

100212111202021 is a wasteful number, since it uses less digits than its factorization.

100212111202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14870.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100212111202021 its reverse (120202111212001), we get a palindrome (220414222414022).

The spelling of 100212111202021 in words is "one hundred trillion, two hundred twelve billion, one hundred eleven million, two hundred two thousand, twenty-one".