3130221213020 has 96 divisors (see below), whose sum is σ = 7293331051776. Its totient is φ = 1119015372800.

The previous prime is 3130221213019. The next prime is 3130221213023. The reversal of 3130221213020 is 203121220313.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3130221212983 and 3130221213001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3130221213023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2576204 + ... + 3591276.

It is an arithmetic number, because the mean of its divisors is an integer number (75972198456).

Almost surely, 2^{3130221213020} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3130221213020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3646665525888).

3130221213020 is an abundant number, since it is smaller than the sum of its proper divisors (4163109838756).

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

3130221213020 is a wasteful number, since it uses less digits than its factorization.

3130221213020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1015331 (or 1015329 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 3130221213020 its reverse (203121220313), we get a palindrome (3333342433333).

The spelling of 3130221213020 in words is "three trillion, one hundred thirty billion, two hundred twenty-one million, two hundred thirteen thousand, twenty".