221102020120122 has 24 divisors (see below), whose sum is σ = 490195176392064. Its totient is φ = 71986704224904.

The previous prime is 221102020120099. The next prime is 221102020120127. The reversal of 221102020120122 is 221021020201122.

It is a happy number.

221102020120122 is a `hidden beast` number, since 221 + 1 + 0 + 20 + 201 + 201 + 22 = 666.

It is a super-2 number, since 2×221102020120122² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221102020120095 and 221102020120104.

It is not an unprimeable number, because it can be changed into a prime (221102020120127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142830761578 + ... + 142830763125.

It is an arithmetic number, because the mean of its divisors is an integer number (20424799016336).

Almost surely, 2^{221102020120122} is an apocalyptic number.

221102020120122 is an abundant number, since it is smaller than the sum of its proper divisors (269093156271942).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221102020120122 is a wasteful number, since it uses less digits than its factorization.

221102020120122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285661524754 (or 285661524751 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221102020120122 its reverse (221021020201122), we get a palindrome (442123040321244).

The spelling of 221102020120122 in words is "two hundred twenty-one trillion, one hundred two billion, twenty million, one hundred twenty thousand, one hundred twenty-two".