101223021131 has 2 divisors, whose sum is σ = 101223021132. Its totient is φ = 101223021130.

The previous prime is 101223021127. The next prime is 101223021149. The reversal of 101223021131 is 131120322101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 101223021131 - 2² = 101223021127 is a prime.

It is a super-2 number, since 2×101223021131² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (101223021161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611510565 + 50611510566.

It is an arithmetic number, because the mean of its divisors is an integer number (50611510566).

Almost surely, 2^101223021131 is an apocalyptic number.

101223021131 is a deficient number, since it is larger than the sum of its proper divisors (1).

101223021131 is an equidigital number, since it uses as much as digits as its factorization.

101223021131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 101223021131 its reverse (131120322101), we get a palindrome (232343343232).

The spelling of 101223021131 in words is "one hundred one billion, two hundred twenty-three million, twenty-one thousand, one hundred thirty-one".