122135332521 has 32 divisors (see below), whose sum is σ = 170152759296. Its totient is φ = 77854392000.

The previous prime is 122135332511. The next prime is 122135332567. The reversal of 122135332521 is 125233531221.

It is not a de Polignac number, because 122135332521 - 2⁹ = 122135332009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122135332511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2426076 + ... + 2475906.

It is an arithmetic number, because the mean of its divisors is an integer number (5317273728).

Almost surely, 2^122135332521 is an apocalyptic number.

It is an amenable number.

122135332521 is a deficient number, since it is larger than the sum of its proper divisors (48017426775).

122135332521 is a wasteful number, since it uses less digits than its factorization.

122135332521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50253.

The product of its digits is 10800, while the sum is 30.

Adding to 122135332521 its reverse (125233531221), we get a palindrome (247368863742).

The spelling of 122135332521 in words is "one hundred twenty-two billion, one hundred thirty-five million, three hundred thirty-two thousand, five hundred twenty-one".