21101020212022 has 32 divisors (see below), whose sum is σ = 31959294681600. Its totient is φ = 10448455825248.

The previous prime is 21101020212011. The next prime is 21101020212049. The reversal of 21101020212022 is 22021202010112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21101020211987 and 21101020212005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 220206373 + ... + 220302175.

It is an arithmetic number, because the mean of its divisors is an integer number (998727958800).

Almost surely, 2^{21101020212022} is an apocalyptic number.

21101020212022 is a deficient number, since it is larger than the sum of its proper divisors (10858274469578).

21101020212022 is a wasteful number, since it uses less digits than its factorization.

21101020212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98580.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21101020212022 its reverse (22021202010112), we get a palindrome (43122222222134).

The spelling of 21101020212022 in words is "twenty-one trillion, one hundred one billion, twenty million, two hundred twelve thousand, twenty-two".