21210100212022 has 16 divisors (see below), whose sum is σ = 31825922138352. Its totient is φ = 10601459898400.

The previous prime is 21210100212019. The next prime is 21210100212071. The reversal of 21210100212022 is 22021200101212.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21210100211987 and 21210100212005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117772068 + ... + 117952024.

It is an arithmetic number, because the mean of its divisors is an integer number (1989120133647).

Almost surely, 2^{21210100212022} is an apocalyptic number.

21210100212022 is a deficient number, since it is larger than the sum of its proper divisors (10615821926330).

21210100212022 is a wasteful number, since it uses less digits than its factorization.

21210100212022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199583.

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

Adding to 21210100212022 its reverse (22021200101212), we get a palindrome (43231300313234).

The spelling of 21210100212022 in words is "twenty-one trillion, two hundred ten billion, one hundred million, two hundred twelve thousand, twenty-two".