20121131059 has 2 divisors, whose sum is σ = 20121131060. Its totient is φ = 20121131058.

The previous prime is 20121131053. The next prime is 20121131111. The reversal of 20121131059 is 95013112102.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20121131059 is a prime.

It is a super-2 number, since 2×20121131059² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20121131053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060565529 + 10060565530.

It is an arithmetic number, because the mean of its divisors is an integer number (10060565530).

Almost surely, 2^20121131059 is an apocalyptic number.

20121131059 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121131059 is an equidigital number, since it uses as much as digits as its factorization.

20121131059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 25.

The spelling of 20121131059 in words is "twenty billion, one hundred twenty-one million, one hundred thirty-one thousand, fifty-nine".