122215544 has 32 divisors (see below), whose sum is σ = 251400240. Its totient is φ = 55238400.

The previous prime is 122215523. The next prime is 122215553. The reversal of 122215544 is 445512221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12092 + ... + 19764.

Almost surely, 2^122215544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122215544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125700120).

122215544 is an abundant number, since it is smaller than the sum of its proper divisors (129184696).

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

122215544 is a wasteful number, since it uses less digits than its factorization.

122215544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7871 (or 7867 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 122215544 is about 11055.1139297612. The cubic root of 122215544 is about 496.2594787827.

Adding to 122215544 its reverse (445512221), we get a palindrome (567727765).

The spelling of 122215544 in words is "one hundred twenty-two million, two hundred fifteen thousand, five hundred forty-four".