122542551015 has 16 divisors (see below), whose sum is σ = 197971657728. Its totient is φ = 64721501856.

The previous prime is 122542551011. The next prime is 122542551029. The reversal of 122542551015 is 510155245221.

It is not a de Polignac number, because 122542551015 - 2² = 122542551011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122542551011) 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, 39656239 + ... + 39659328.

It is an arithmetic number, because the mean of its divisors is an integer number (12373228608).

Almost surely, 2^122542551015 is an apocalyptic number.

122542551015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

122542551015 is a deficient number, since it is larger than the sum of its proper divisors (75429106713).

122542551015 is a wasteful number, since it uses less digits than its factorization.

122542551015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79315678.

The product of its (nonzero) digits is 20000, while the sum is 33.

Adding to 122542551015 its reverse (510155245221), we get a palindrome (632697796236).

The spelling of 122542551015 in words is "one hundred twenty-two billion, five hundred forty-two million, five hundred fifty-one thousand, fifteen".