122542203531 has 16 divisors (see below), whose sum is σ = 178877536128. Its totient is φ = 74003697600.

The previous prime is 122542203523. The next prime is 122542203533. The reversal of 122542203531 is 135302245221.

It is not a de Polignac number, because 122542203531 - 2³ = 122542203523 is a prime.

It is a super-2 number, since 2×122542203531² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122542203533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6598201 + ... + 6616746.

It is an arithmetic number, because the mean of its divisors is an integer number (11179846008).

Almost surely, 2^122542203531 is an apocalyptic number.

122542203531 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

122542203531 is a deficient number, since it is larger than the sum of its proper divisors (56335332597).

122542203531 is a wasteful number, since it uses less digits than its factorization.

122542203531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13215242.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 122542203531 its reverse (135302245221), we get a palindrome (257844448752).

The spelling of 122542203531 in words is "one hundred twenty-two billion, five hundred forty-two million, two hundred three thousand, five hundred thirty-one".