221110120202020 has 48 divisors (see below), whose sum is σ = 530665200979200. Its totient is φ = 75809053713024.

The previous prime is 221110120201991. The next prime is 221110120202047. The reversal of 221110120202020 is 20202021011122.

It is a happy number.

221110120202020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×221110120202020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221110120201985 and 221110120202003.

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, 117168906 + ... + 119041054.

It is an arithmetic number, because the mean of its divisors is an integer number (11055525020400).

Almost surely, 2^{221110120202020} is an apocalyptic number.

221110120202020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221110120202020 is an abundant number, since it is smaller than the sum of its proper divisors (309555080777180).

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

221110120202020 is a wasteful number, since it uses less digits than its factorization.

221110120202020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715772 (or 2715770 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221110120202020 its reverse (20202021011122), we get a palindrome (241312141213142).

The spelling of 221110120202020 in words is "two hundred twenty-one trillion, one hundred ten billion, one hundred twenty million, two hundred two thousand, twenty".