2130205121531 has 2 divisors, whose sum is σ = 2130205121532. Its totient is φ = 2130205121530.

The previous prime is 2130205121519. The next prime is 2130205121573. The reversal of 2130205121531 is 1351215020312.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2130205121531 is a prime.

It is a super-2 number, since 2×2130205121531² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2130205121531.

It is not a weakly prime, because it can be changed into another prime (2130205121501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065102560765 + 1065102560766.

It is an arithmetic number, because the mean of its divisors is an integer number (1065102560766).

Almost surely, 2^{2130205121531} is an apocalyptic number.

2130205121531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130205121531 is an equidigital number, since it uses as much as digits as its factorization.

2130205121531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 2130205121531 in words is "two trillion, one hundred thirty billion, two hundred five million, one hundred twenty-one thousand, five hundred thirty-one".