221012210100122 has 64 divisors (see below), whose sum is σ = 392971604779008. Its totient is φ = 91225420776000.

The previous prime is 221012210100107. The next prime is 221012210100137. The reversal of 221012210100122 is 221001012210122.

It is an interprime number because it is at equal distance from previous prime (221012210100107) and next prime (221012210100137).

It is a self number, because there is not a number n which added to its sum of digits gives 221012210100122.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2708077097 + ... + 2708158707.

It is an arithmetic number, because the mean of its divisors is an integer number (6140181324672).

Almost surely, 2^{221012210100122} is an apocalyptic number.

221012210100122 is a deficient number, since it is larger than the sum of its proper divisors (171959394678886).

221012210100122 is a wasteful number, since it uses less digits than its factorization.

221012210100122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111435.

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

Adding to 221012210100122 its reverse (221001012210122), we get a palindrome (442013222310244).

The spelling of 221012210100122 in words is "two hundred twenty-one trillion, twelve billion, two hundred ten million, one hundred thousand, one hundred twenty-two".