130121522 has 4 divisors (see below), whose sum is σ = 195182286. Its totient is φ = 65060760.

The previous prime is 130121513. The next prime is 130121531. The reversal of 130121522 is 225121031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 225121031 = 239 ⋅941929.

It is an interprime number because it is at equal distance from previous prime (130121513) and next prime (130121531).

It can be written as a sum of positive squares in only one way, i.e., 126315121 + 3806401 = 11239^2 + 1951^2 .

It is a super-2 number, since 2×130121522² = 33863220975192968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 130121522.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32530379 + ... + 32530382.

Almost surely, 2^130121522 is an apocalyptic number.

130121522 is a deficient number, since it is larger than the sum of its proper divisors (65060764).

130121522 is an equidigital number, since it uses as much as digits as its factorization.

130121522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65060763.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 130121522 is about 11407.0820984159. The cubic root of 130121522 is about 506.7375003884.

Adding to 130121522 its reverse (225121031), we get a palindrome (355242553).

The spelling of 130121522 in words is "one hundred thirty million, one hundred twenty-one thousand, five hundred twenty-two".