122155572 has 96 divisors (see below), whose sum is σ = 360428544. Its totient is φ = 31276800.

The previous prime is 122155549. The next prime is 122155573. The reversal of 122155572 is 275551221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122155573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66547 + ... + 68357.

It is an arithmetic number, because the mean of its divisors is an integer number (3754464).

Almost surely, 2^122155572 is an apocalyptic number.

122155572 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 122155572, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180214272).

122155572 is an abundant number, since it is smaller than the sum of its proper divisors (238272972).

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

122155572 is a wasteful number, since it uses less digits than its factorization.

122155572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909 (or 1907 counting only the distinct ones).

The product of its digits is 7000, while the sum is 30.

The square root of 122155572 is about 11052.4011870724. The cubic root of 122155572 is about 496.1782928661.

The spelling of 122155572 in words is "one hundred twenty-two million, one hundred fifty-five thousand, five hundred seventy-two".