220021123102 has 32 divisors (see below), whose sum is σ = 387674346240. Its totient is φ = 92531306880.

The previous prime is 220021123087. The next prime is 220021123111. The reversal of 220021123102 is 201321120022.

It is a happy number.

It is a super-2 number, since 2×220021123102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4963458 + ... + 5007589.

It is an arithmetic number, because the mean of its divisors is an integer number (12114823320).

Almost surely, 2^220021123102 is an apocalyptic number.

220021123102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

220021123102 is a deficient number, since it is larger than the sum of its proper divisors (167653223138).

220021123102 is a wasteful number, since it uses less digits than its factorization.

220021123102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9971136.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220021123102 its reverse (201321120022), we get a palindrome (421342243124).

The spelling of 220021123102 in words is "two hundred twenty billion, twenty-one million, one hundred twenty-three thousand, one hundred two".