2131212030020 has 48 divisors (see below), whose sum is σ = 4585951541808. Its totient is φ = 831466352640.

The previous prime is 2131212029987. The next prime is 2131212030041. The reversal of 2131212030020 is 200302121312.

It can be written as a sum of positive squares in 8 ways, for example, as 977254827844 + 1153957202176 = 988562^2 + 1074224^2 .

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, 2680034 + ... + 3383046.

It is an arithmetic number, because the mean of its divisors is an integer number (95540657121).

Almost surely, 2^{2131212030020} is an apocalyptic number.

2131212030020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131212030020 is an abundant number, since it is smaller than the sum of its proper divisors (2454739511788).

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

2131212030020 is a wasteful number, since it uses less digits than its factorization.

2131212030020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706760 (or 706758 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 2131212030020 its reverse (200302121312), we get a palindrome (2331514151332).

The spelling of 2131212030020 in words is "two trillion, one hundred thirty-one billion, two hundred twelve million, thirty thousand, twenty".