122222431 has 4 divisors (see below), whose sum is σ = 122613232. Its totient is φ = 121831632.

The previous prime is 122222413. The next prime is 122222447. The reversal of 122222431 is 134222221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122222431 is a prime.

It is a super-2 number, since 2×122222431² = 29876645279099522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122222399 and 122222408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122222411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194931 + ... + 195556.

It is an arithmetic number, because the mean of its divisors is an integer number (30653308).

Almost surely, 2^122222431 is an apocalyptic number.

122222431 is a deficient number, since it is larger than the sum of its proper divisors (390801).

122222431 is an equidigital number, since it uses as much as digits as its factorization.

122222431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390800.

The product of its digits is 384, while the sum is 19.

The square root of 122222431 is about 11055.4254101776. The cubic root of 122222431 is about 496.2688002234.

Adding to 122222431 its reverse (134222221), we get a palindrome (256444652).

It can be divided in two parts, 1222 and 22431, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 122222431 in words is "one hundred twenty-two million, two hundred twenty-two thousand, four hundred thirty-one".