21122201022 has 24 divisors (see below), whose sum is σ = 45743940504. Its totient is φ = 6499138464.

The previous prime is 21122200999. The next prime is 21122201027. The reversal of 21122201022 is 22010222112.

It is a super-2 number, since 2×21122201022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122200992 and 21122201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122201027) 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 11 ways as a sum of consecutive naturals, for example, 10414273 + ... + 10416300.

It is an arithmetic number, because the mean of its divisors is an integer number (1905997521).

Almost surely, 2^21122201022 is an apocalyptic number.

21122201022 is an abundant number, since it is smaller than the sum of its proper divisors (24621739482).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21122201022 is a wasteful number, since it uses less digits than its factorization.

21122201022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20830604 (or 20830591 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21122201022 its reverse (22010222112), we get a palindrome (43132423134).

It can be divided in two parts, 2112 and 2201022, that multiplied together give a palindrome (4648558464).

The spelling of 21122201022 in words is "twenty-one billion, one hundred twenty-two million, two hundred one thousand, twenty-two".