2120130331220 has 96 divisors (see below), whose sum is σ = 5002897084416. Its totient is φ = 748039824000.

The previous prime is 2120130331211. The next prime is 2120130331243. The reversal of 2120130331220 is 221330310212.

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 = 2120130331192 and 2120130331201.

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, 686357 + ... + 2170563.

It is an arithmetic number, because the mean of its divisors is an integer number (52113511296).

Almost surely, 2^{2120130331220} is an apocalyptic number.

2120130331220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120130331220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2501448542208).

2120130331220 is an abundant number, since it is smaller than the sum of its proper divisors (2882766753196).

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

2120130331220 is a wasteful number, since it uses less digits than its factorization.

2120130331220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1484421 (or 1484419 counting only the distinct ones).

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

Adding to 2120130331220 its reverse (221330310212), we get a palindrome (2341460641432).

The spelling of 2120130331220 in words is "two trillion, one hundred twenty billion, one hundred thirty million, three hundred thirty-one thousand, two hundred twenty".