21212032212022 has 16 divisors (see below), whose sum is σ = 31847743409472. Its totient is φ = 10596118256640.

The previous prime is 21212032211987. The next prime is 21212032212089. The reversal of 21212032212022 is 22021223021212.

It is a happy number.

It is a super-2 number, since 2×21212032212022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21212032211984 and 21212032212002.

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 7 ways as a sum of consecutive naturals, for example, 100702372 + ... + 100912792.

It is an arithmetic number, because the mean of its divisors is an integer number (1990483963092).

Almost surely, 2^{21212032212022} is an apocalyptic number.

21212032212022 is a deficient number, since it is larger than the sum of its proper divisors (10635711197450).

21212032212022 is a wasteful number, since it uses less digits than its factorization.

21212032212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257223.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21212032212022 its reverse (22021223021212), we get a palindrome (43233255233234).

The spelling of 21212032212022 in words is "twenty-one trillion, two hundred twelve billion, thirty-two million, two hundred twelve thousand, twenty-two".