21122012212022 has 8 divisors (see below), whose sum is σ = 31683087577416. Its totient is φ = 10560983019552.

The previous prime is 21122012211961. The next prime is 21122012212027. The reversal of 21122012212022 is 22021221022112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21122012212022² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122012211985 and 21122012212003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122012212027) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10375988 + ... + 12243575.

It is an arithmetic number, because the mean of its divisors is an integer number (3960385947177).

Almost surely, 2^{21122012212022} is an apocalyptic number.

21122012212022 is a deficient number, since it is larger than the sum of its proper divisors (10561075365394).

21122012212022 is a wasteful number, since it uses less digits than its factorization.

21122012212022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23086462.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 21122012212022 its reverse (22021221022112), we get a palindrome (43143233234134).

The spelling of 21122012212022 in words is "twenty-one trillion, one hundred twenty-two billion, twelve million, two hundred twelve thousand, twenty-two".