122542021153 has 4 divisors (see below), whose sum is σ = 122732600368. Its totient is φ = 122351441940.

The previous prime is 122542021117. The next prime is 122542021169. The reversal of 122542021153 is 351120245221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 351120245221 = 14387 ⋅24405383.

It is a cyclic number.

It is not a de Polignac number, because 122542021153 - 2²⁵ = 122508466721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122542021853) 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, 95288643 + ... + 95289928.

It is an arithmetic number, because the mean of its divisors is an integer number (30683150092).

Almost surely, 2^122542021153 is an apocalyptic number.

It is an amenable number.

122542021153 is a deficient number, since it is larger than the sum of its proper divisors (190579215).

122542021153 is an equidigital number, since it uses as much as digits as its factorization.

122542021153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190579214.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 122542021153 its reverse (351120245221), we get a palindrome (473662266374).

The spelling of 122542021153 in words is "one hundred twenty-two billion, five hundred forty-two million, twenty-one thousand, one hundred fifty-three".