122991522 has 16 divisors (see below), whose sum is σ = 258929760. Its totient is φ = 38839392.

The previous prime is 122991521. The next prime is 122991559. The reversal of 122991522 is 225199221.

It is not an unprimeable number, because it can be changed into a prime (122991521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539323 + ... + 539550.

It is an arithmetic number, because the mean of its divisors is an integer number (16183110).

Almost surely, 2^122991522 is an apocalyptic number.

122991522 is an abundant number, since it is smaller than the sum of its proper divisors (135938238).

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

122991522 is a wasteful number, since it uses less digits than its factorization.

122991522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078897.

The product of its digits is 6480, while the sum is 33.

The square root of 122991522 is about 11090.1542820648. The cubic root of 122991522 is about 497.3075568574.

The spelling of 122991522 in words is "one hundred twenty-two million, nine hundred ninety-one thousand, five hundred twenty-two".