221122122212002 has 64 divisors (see below), whose sum is σ = 371383906362624. Its totient is φ = 97887165891840.

The previous prime is 221122122211973. The next prime is 221122122212099. The reversal of 221122122212002 is 200212221221122.

It is a super-2 number, since 2×221122122212002² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181907043 + ... + 183118585.

It is an arithmetic number, because the mean of its divisors is an integer number (5802873536916).

Almost surely, 2^{221122122212002} is an apocalyptic number.

221122122212002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221122122212002 is a deficient number, since it is larger than the sum of its proper divisors (150261784150622).

221122122212002 is a wasteful number, since it uses less digits than its factorization.

221122122212002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1212763.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 221122122212002 its reverse (200212221221122), we get a palindrome (421334343433124).

The spelling of 221122122212002 in words is "two hundred twenty-one trillion, one hundred twenty-two billion, one hundred twenty-two million, two hundred twelve thousand, two".