220111122121120 has 48 divisors (see below), whose sum is σ = 520439816961288. Its totient is φ = 87972103290880.

The previous prime is 220111122121117. The next prime is 220111122121159. The reversal of 220111122121120 is 21121221111022.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 99434481795856 + 120676640325264 = 9971684^2 + 10985292^2 .

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, 565004341 + ... + 565393780.

Almost surely, 2^{220111122121120} is an apocalyptic number.

220111122121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220111122121120 is an abundant number, since it is smaller than the sum of its proper divisors (300328694840168).

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

220111122121120 is a wasteful number, since it uses less digits than its factorization.

220111122121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130399353 (or 1130399345 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 220111122121120 its reverse (21121221111022), we get a palindrome (241232343232142).

The spelling of 220111122121120 in words is "two hundred twenty trillion, one hundred eleven billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred twenty".