21122101022 has 16 divisors (see below), whose sum is σ = 34565797872. Its totient is φ = 9600299520.

The previous prime is 21122101009. The next prime is 21122101081. The reversal of 21122101022 is 22010122112.

It is a super-2 number, since 2×21122101022² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21122100988 and 21122101006.

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, 464318 + ... + 507774.

It is an arithmetic number, because the mean of its divisors is an integer number (2160362367).

Almost surely, 2^21122101022 is an apocalyptic number.

21122101022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21122101022 is a deficient number, since it is larger than the sum of its proper divisors (13443696850).

21122101022 is a wasteful number, since it uses less digits than its factorization.

21122101022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65563.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21122101022 its reverse (22010122112), we get a palindrome (43132223134).

The spelling of 21122101022 in words is "twenty-one billion, one hundred twenty-two million, one hundred one thousand, twenty-two".