21134301431129 has 2 divisors, whose sum is σ = 21134301431130. Its totient is φ = 21134301431128.

The previous prime is 21134301431081. The next prime is 21134301431237. The reversal of 21134301431129 is 92113410343112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20646818191129 + 487483240000 = 4543877^2 + 698200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21134301431129 is a prime.

It is not a weakly prime, because it can be changed into another prime (21134301431729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10567150715564 + 10567150715565.

It is an arithmetic number, because the mean of its divisors is an integer number (10567150715565).

Almost surely, 2^{21134301431129} is an apocalyptic number.

It is an amenable number.

21134301431129 is a deficient number, since it is larger than the sum of its proper divisors (1).

21134301431129 is an equidigital number, since it uses as much as digits as its factorization.

21134301431129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 21134301431129 in words is "twenty-one trillion, one hundred thirty-four billion, three hundred one million, four hundred thirty-one thousand, one hundred twenty-nine".