1013200001220 has 48 divisors (see below), whose sum is σ = 3094865460288. Its totient is φ = 245624242560.

The previous prime is 1013200001213. The next prime is 1013200001237. The reversal of 1013200001220 is 221000023101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1013200001196 and 1013200001205.

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, 767575099 + ... + 767576418.

It is an arithmetic number, because the mean of its divisors is an integer number (64476363756).

Almost surely, 2^{1013200001220} is an apocalyptic number.

1013200001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013200001220 is an abundant number, since it is smaller than the sum of its proper divisors (2081665459068).

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

1013200001220 is a wasteful number, since it uses less digits than its factorization.

1013200001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535151540 (or 1535151538 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1013200001220 its reverse (221000023101), we get a palindrome (1234200024321).

The spelling of 1013200001220 in words is "one trillion, thirteen billion, two hundred million, one thousand, two hundred twenty".