21022112100122 has 64 divisors (see below), whose sum is σ = 38597819412480. Its totient is φ = 8386719777216.

The previous prime is 21022112100079. The next prime is 21022112100133. The reversal of 21022112100122 is 22100121122012.

It is a self number, because there is not a number n which added to its sum of digits gives 21022112100122.

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 31 ways as a sum of consecutive naturals, for example, 5589743 + ... + 8560925.

It is an arithmetic number, because the mean of its divisors is an integer number (603090928320).

Almost surely, 2^{21022112100122} is an apocalyptic number.

21022112100122 is a deficient number, since it is larger than the sum of its proper divisors (17575707312358).

21022112100122 is a wasteful number, since it uses less digits than its factorization.

21022112100122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971675.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21022112100122 its reverse (22100121122012), we get a palindrome (43122233222134).

The spelling of 21022112100122 in words is "twenty-one trillion, twenty-two billion, one hundred twelve million, one hundred thousand, one hundred twenty-two".