121255522 has 4 divisors (see below), whose sum is σ = 181883286. Its totient is φ = 60627760.

The previous prime is 121255499. The next prime is 121255523. The reversal of 121255522 is 225552121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225552121 = 443 ⋅509147.

It can be written as a sum of positive squares in only one way, i.e., 68707521 + 52548001 = 8289^2 + 7249^2 .

It is not an unprimeable number, because it can be changed into a prime (121255523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30313879 + ... + 30313882.

Almost surely, 2^121255522 is an apocalyptic number.

121255522 is a deficient number, since it is larger than the sum of its proper divisors (60627764).

121255522 is an equidigital number, since it uses as much as digits as its factorization.

121255522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60627763.

The product of its digits is 2000, while the sum is 25.

The square root of 121255522 is about 11011.6085110214. The cubic root of 121255522 is about 494.9566632128.

The spelling of 121255522 in words is "one hundred twenty-one million, two hundred fifty-five thousand, five hundred twenty-two".