221001021120122 has 16 divisors (see below), whose sum is σ = 331649501863680. Its totient is φ = 110451188440272.

The previous prime is 221001021120097. The next prime is 221001021120149. The reversal of 221001021120122 is 221021120100122.

It is a super-2 number, since 2×221001021120122² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221001021120122.

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, 403260863 + ... + 403808525.

It is an arithmetic number, because the mean of its divisors is an integer number (20728093866480).

Almost surely, 2^{221001021120122} is an apocalyptic number.

221001021120122 is a deficient number, since it is larger than the sum of its proper divisors (110648480743558).

221001021120122 is a wasteful number, since it uses less digits than its factorization.

221001021120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637357.

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

Adding to 221001021120122 its reverse (221021120100122), we get a palindrome (442022141220244).

The spelling of 221001021120122 in words is "two hundred twenty-one trillion, one billion, twenty-one million, one hundred twenty thousand, one hundred twenty-two".