12254220056551 has 12 divisors (see below), whose sum is σ = 13501909481112. Its totient is φ = 11029900940000.

The previous prime is 12254220056543. The next prime is 12254220056557. The reversal of 12254220056551 is 15565002245221.

It is not a de Polignac number, because 12254220056551 - 2³ = 12254220056543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12254220056557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54491260 + ... + 54715681.

It is an arithmetic number, because the mean of its divisors is an integer number (1125159123426).

Almost surely, 2^{12254220056551} is an apocalyptic number.

12254220056551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12254220056551 is a deficient number, since it is larger than the sum of its proper divisors (1247689424561).

12254220056551 is a wasteful number, since it uses less digits than its factorization.

12254220056551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109207154 (or 109207053 counting only the distinct ones).

The product of its (nonzero) digits is 240000, while the sum is 40.

The spelling of 12254220056551 in words is "twelve trillion, two hundred fifty-four billion, two hundred twenty million, fifty-six thousand, five hundred fifty-one".