21101021102212 has 48 divisors (see below), whose sum is σ = 37548889862400. Its totient is φ = 10374335625600.

The previous prime is 21101021102179. The next prime is 21101021102233. The reversal of 21101021102212 is 21220112010112.

It is a super-2 number, since 2×21101021102212² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64066489 + ... + 64395007.

It is an arithmetic number, because the mean of its divisors is an integer number (782268538800).

Almost surely, 2^{21101021102212} is an apocalyptic number.

It is an amenable number.

21101021102212 is a deficient number, since it is larger than the sum of its proper divisors (16447868760188).

21101021102212 is a wasteful number, since it uses less digits than its factorization.

21101021102212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329716 (or 329714 counting only the distinct ones).

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

Adding to 21101021102212 its reverse (21220112010112), we get a palindrome (42321133112324).

The spelling of 21101021102212 in words is "twenty-one trillion, one hundred one billion, twenty-one million, one hundred two thousand, two hundred twelve".