20120222131 has 2 divisors, whose sum is σ = 20120222132. Its totient is φ = 20120222130.

The previous prime is 20120222093. The next prime is 20120222147. The reversal of 20120222131 is 13122202102.

It is a happy number.

It is an a-pointer prime, because the next prime (20120222147) can be obtained adding 20120222131 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20120222131 - 2¹⁵ = 20120189363 is a prime.

It is a super-2 number, since 2×20120222131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20120229131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060111065 + 10060111066.

It is an arithmetic number, because the mean of its divisors is an integer number (10060111066).

Almost surely, 2^20120222131 is an apocalyptic number.

20120222131 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120222131 is an equidigital number, since it uses as much as digits as its factorization.

20120222131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20120222131 its reverse (13122202102), we get a palindrome (33242424233).

The spelling of 20120222131 in words is "twenty billion, one hundred twenty million, two hundred twenty-two thousand, one hundred thirty-one".