122400021031 has 8 divisors (see below), whose sum is σ = 125271512960. Its totient is φ = 119529664632.

The previous prime is 122400021019. The next prime is 122400021043. The reversal of 122400021031 is 130120004221.

It is an interprime number because it is at equal distance from previous prime (122400021019) and next prime (122400021043).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122400021031 - 2²⁹ = 121863150119 is a prime.

It is a super-2 number, since 2×122400021031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122400020996 and 122400021014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122400021001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63795 + ... + 498868.

It is an arithmetic number, because the mean of its divisors is an integer number (15658939120).

Almost surely, 2^122400021031 is an apocalyptic number.

122400021031 is a deficient number, since it is larger than the sum of its proper divisors (2871491929).

122400021031 is an equidigital number, since it uses as much as digits as its factorization.

122400021031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567765.

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

Adding to 122400021031 its reverse (130120004221), we get a palindrome (252520025252).

The spelling of 122400021031 in words is "one hundred twenty-two billion, four hundred million, twenty-one thousand, thirty-one".