121553122 has 4 divisors (see below), whose sum is σ = 182329686. Its totient is φ = 60776560.

The previous prime is 121553041. The next prime is 121553149. The reversal of 121553122 is 221355121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221355121 = 13 ⋅17027317.

It can be written as a sum of positive squares in only one way, i.e., 120362841 + 1190281 = 10971^2 + 1091^2 .

It is a super-2 number, since 2×121553122² = 29550322935893768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121553093 and 121553102.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30388279 + ... + 30388282.

Almost surely, 2^121553122 is an apocalyptic number.

121553122 is a deficient number, since it is larger than the sum of its proper divisors (60776564).

121553122 is an equidigital number, since it uses as much as digits as its factorization.

121553122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60776563.

The product of its digits is 600, while the sum is 22.

The square root of 121553122 is about 11025.1132420488. The cubic root of 121553122 is about 495.3612599359.

The spelling of 121553122 in words is "one hundred twenty-one million, five hundred fifty-three thousand, one hundred twenty-two".