1013221003020 has 48 divisors (see below), whose sum is σ = 2902995997440. Its totient is φ = 263908725696.

The previous prime is 1013221003013. The next prime is 1013221003027. The reversal of 1013221003020 is 203001223101.

It is an interprime number because it is at equal distance from previous prime (1013221003013) and next prime (1013221003027).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1013221003027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196358080 + ... + 196363239.

It is an arithmetic number, because the mean of its divisors is an integer number (60479083280).

Almost surely, 2^{1013221003020} is an apocalyptic number.

1013221003020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013221003020 is an abundant number, since it is smaller than the sum of its proper divisors (1889774994420).

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

1013221003020 is a wasteful number, since it uses less digits than its factorization.

1013221003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392721374 (or 392721372 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1013221003020 its reverse (203001223101), we get a palindrome (1216222226121).

The spelling of 1013221003020 in words is "one trillion, thirteen billion, two hundred twenty-one million, three thousand, twenty".