2131121323030 has 128 divisors (see below), whose sum is σ = 4543406899200. Its totient is φ = 704298309120.

The previous prime is 2131121323007. The next prime is 2131121323049. The reversal of 2131121323030 is 303231211312.

It is a junction number, because it is equal to n+sod(n) for n = 2131121322992 and 2131121323010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1093442496 + ... + 1093444444.

It is an arithmetic number, because the mean of its divisors is an integer number (35495366400).

Almost surely, 2^{2131121323030} is an apocalyptic number.

2131121323030 is an abundant number, since it is smaller than the sum of its proper divisors (2412285576170).

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

2131121323030 is a wasteful number, since it uses less digits than its factorization.

2131121323030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3734.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 2131121323030 its reverse (303231211312), we get a palindrome (2434352534342).

The spelling of 2131121323030 in words is "two trillion, one hundred thirty-one billion, one hundred twenty-one million, three hundred twenty-three thousand, thirty".