122403240421 has 64 divisors (see below), whose sum is σ = 163393044480. Its totient is φ = 88767221760.

The previous prime is 122403240413. The next prime is 122403240431. The reversal of 122403240421 is 124042304221.

It is not a de Polignac number, because 122403240421 - 2³ = 122403240413 is a prime.

It is a super-2 number, since 2×122403240421² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122403240431) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 95701660 + ... + 95702938.

It is an arithmetic number, because the mean of its divisors is an integer number (2553016320).

Almost surely, 2^122403240421 is an apocalyptic number.

122403240421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122403240421 is a deficient number, since it is larger than the sum of its proper divisors (40989804059).

122403240421 is a wasteful number, since it uses less digits than its factorization.

122403240421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 122403240421 its reverse (124042304221), we get a palindrome (246445544642).

The spelling of 122403240421 in words is "one hundred twenty-two billion, four hundred three million, two hundred forty thousand, four hundred twenty-one".