20120013091 has 2 divisors, whose sum is σ = 20120013092. Its totient is φ = 20120013090.

The previous prime is 20120013073. The next prime is 20120013127. The reversal of 20120013091 is 19031002102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20120013091 - 2⁵ = 20120013059 is a prime.

It is a super-2 number, since 2×20120013091² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20120013031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060006545 + 10060006546.

It is an arithmetic number, because the mean of its divisors is an integer number (10060006546).

Almost surely, 2^20120013091 is an apocalyptic number.

20120013091 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120013091 is an equidigital number, since it uses as much as digits as its factorization.

20120013091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 20120013091 its reverse (19031002102), we get a palindrome (39151015193).

The spelling of 20120013091 in words is "twenty billion, one hundred twenty million, thirteen thousand, ninety-one".