101222431 has 2 divisors, whose sum is σ = 101222432. Its totient is φ = 101222430.

The previous prime is 101222413. The next prime is 101222447. The reversal of 101222431 is 134222101.

Together with previous prime (101222413) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (101222447) can be obtained adding 101222431 to its sum of digits (16).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101222431 - 2²³ = 92833823 is a prime.

It is a super-2 number, since 2×101222431² = 20491961075099522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101225431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611215 + 50611216.

It is an arithmetic number, because the mean of its divisors is an integer number (50611216).

Almost surely, 2^101222431 is an apocalyptic number.

101222431 is a deficient number, since it is larger than the sum of its proper divisors (1).

101222431 is an equidigital number, since it uses as much as digits as its factorization.

101222431 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.

The square root of 101222431 is about 10060.9358908603. The cubic root of 101222431 is about 466.0425691923.

Adding to 101222431 its reverse (134222101), we get a palindrome (235444532).

The spelling of 101222431 in words is "one hundred one million, two hundred twenty-two thousand, four hundred thirty-one".