2130020311421 has 16 divisors (see below), whose sum is σ = 2179087873200. Its totient is φ = 2081413601280.

The previous prime is 2130020311399. The next prime is 2130020311469. The reversal of 2130020311421 is 1241130200312.

It can be written as a sum of positive squares in 8 ways, for example, as 552069804196 + 1577950507225 = 743014^2 + 1256165^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130020311421 - 2⁶ = 2130020311357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2130020311393 and 2130020311402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130020311121) 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, 73239935 + ... + 73269011.

It is an arithmetic number, because the mean of its divisors is an integer number (136192992075).

Almost surely, 2^{2130020311421} is an apocalyptic number.

It is an amenable number.

2130020311421 is a deficient number, since it is larger than the sum of its proper divisors (49067561779).

2130020311421 is a wasteful number, since it uses less digits than its factorization.

2130020311421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36944.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2130020311421 its reverse (1241130200312), we get a palindrome (3371150511733).

The spelling of 2130020311421 in words is "two trillion, one hundred thirty billion, twenty million, three hundred eleven thousand, four hundred twenty-one".