122055544551 has 16 divisors (see below), whose sum is σ = 173072076800. Its totient is φ = 76292990208.

The previous prime is 122055544519. The next prime is 122055544571. The reversal of 122055544551 is 155445550221.

It is a happy number.

It is not a de Polignac number, because 122055544551 - 2⁵ = 122055544519 is a prime.

It is a super-2 number, since 2×122055544551² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122055544571) 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, 11032231 + ... + 11043288.

It is an arithmetic number, because the mean of its divisors is an integer number (10817004800).

Almost surely, 2^122055544551 is an apocalyptic number.

122055544551 is a deficient number, since it is larger than the sum of its proper divisors (51016532249).

122055544551 is a wasteful number, since it uses less digits than its factorization.

122055544551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22075638.

The product of its (nonzero) digits is 200000, while the sum is 39.

The spelling of 122055544551 in words is "one hundred twenty-two billion, fifty-five million, five hundred forty-four thousand, five hundred fifty-one".