21120202010122 has 32 divisors (see below), whose sum is σ = 33081827530752. Its totient is φ = 10093597899264.

The previous prime is 21120202010119. The next prime is 21120202010123. The reversal of 21120202010122 is 22101020202112.

It is a happy number.

It is a super-2 number, since 2×21120202010122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21120202010096 and 21120202010105.

It is not an unprimeable number, because it can be changed into a prime (21120202010123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 755168983 + ... + 755196949.

It is an arithmetic number, because the mean of its divisors is an integer number (1033807110336).

Almost surely, 2^{21120202010122} is an apocalyptic number.

21120202010122 is a deficient number, since it is larger than the sum of its proper divisors (11961625520630).

21120202010122 is a wasteful number, since it uses less digits than its factorization.

21120202010122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39382.

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

Adding to 21120202010122 its reverse (22101020202112), we get a palindrome (43221222212234).

The spelling of 21120202010122 in words is "twenty-one trillion, one hundred twenty billion, two hundred two million, ten thousand, one hundred twenty-two".