1201220112020 has 96 divisors (see below), whose sum is σ = 2549888667648. Its totient is φ = 475316646912.

The previous prime is 1201220112019. The next prime is 1201220112073. The reversal of 1201220112020 is 202110221021.

It is a junction number, because it is equal to n+sod(n) for n = 1201220111986 and 1201220112004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1095004112 + ... + 1095005208.

It is an arithmetic number, because the mean of its divisors is an integer number (26561340288).

Almost surely, 2^{1201220112020} is an apocalyptic number.

1201220112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201220112020 is an abundant number, since it is smaller than the sum of its proper divisors (1348668555628).

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

1201220112020 is a wasteful number, since it uses less digits than its factorization.

1201220112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2529 (or 2527 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1201220112020 its reverse (202110221021), we get a palindrome (1403330333041).

The spelling of 1201220112020 in words is "one trillion, two hundred one billion, two hundred twenty million, one hundred twelve thousand, twenty".