1220210112020 has 12 divisors (see below), whose sum is σ = 2562441235284. Its totient is φ = 488084044800.

The previous prime is 1220210112013. The next prime is 1220210112031. The reversal of 1220210112020 is 202110120221.

It can be written as a sum of positive squares in 2 ways, for example, as 343717203076 + 876492908944 = 586274^2 + 936212^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1220210111986 and 1220210112004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30505252781 + ... + 30505252820.

It is an arithmetic number, because the mean of its divisors is an integer number (213536769607).

Almost surely, 2^{1220210112020} is an apocalyptic number.

1220210112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220210112020 is an abundant number, since it is smaller than the sum of its proper divisors (1342231123264).

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

1220210112020 is a wasteful number, since it uses less digits than its factorization.

1220210112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61010505610 (or 61010505608 counting only the distinct ones).

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

Adding to 1220210112020 its reverse (202110120221), we get a palindrome (1422320232241).

The spelling of 1220210112020 in words is "one trillion, two hundred twenty billion, two hundred ten million, one hundred twelve thousand, twenty".