123227730972 has 108 divisors (see below), whose sum is σ = 323755122600. Its totient is φ = 41037987744.

The previous prime is 123227730949. The next prime is 123227730991. The reversal of 123227730972 is 279037722321.

It is a happy number.

123227730972 is a `hidden beast` number, since 1 + 2 + 3 + 2 + 277 + 309 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 55085038 + ... + 55087274.

Almost surely, 2^123227730972 is an apocalyptic number.

123227730972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123227730972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161877561300).

123227730972 is an abundant number, since it is smaller than the sum of its proper divisors (200527391628).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123227730972 is an equidigital number, since it uses as much as digits as its factorization.

123227730972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4364 (or 4341 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 45.

The spelling of 123227730972 in words is "one hundred twenty-three billion, two hundred twenty-seven million, seven hundred thirty thousand, nine hundred seventy-two".