122152017561 has 16 divisors (see below), whose sum is σ = 189291264000. Its totient is φ = 68618081808.

The previous prime is 122152017539. The next prime is 122152017599. The reversal of 122152017561 is 165710251221.

It is not a de Polignac number, because 122152017561 - 2⁵ = 122152017529 is a prime.

It is a super-2 number, since 2×122152017561² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122152017461) 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, 49293361 + ... + 49295838.

It is an arithmetic number, because the mean of its divisors is an integer number (11830704000).

Almost surely, 2^122152017561 is an apocalyptic number.

It is an amenable number.

122152017561 is a deficient number, since it is larger than the sum of its proper divisors (67139246439).

122152017561 is an equidigital number, since it uses as much as digits as its factorization.

122152017561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98589268.

The product of its (nonzero) digits is 8400, while the sum is 33.

Adding to 122152017561 its reverse (165710251221), we get a palindrome (287862268782).

The spelling of 122152017561 in words is "one hundred twenty-two billion, one hundred fifty-two million, seventeen thousand, five hundred sixty-one".