121083145 has 4 divisors (see below), whose sum is σ = 145299780. Its totient is φ = 96866512.

The previous prime is 121083133. The next prime is 121083173. The reversal of 121083145 is 541380121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 541380121 = 587 ⋅922283.

It can be written as a sum of positive squares in 2 ways, for example, as 38291344 + 82791801 = 6188^2 + 9099^2 .

It is a cyclic number.

It is not a de Polignac number, because 121083145 - 2²⁵ = 87528713 is a prime.

It is a super-2 number, since 2×121083145² = 29322256006182050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12108310 + ... + 12108319.

It is an arithmetic number, because the mean of its divisors is an integer number (36324945).

Almost surely, 2^121083145 is an apocalyptic number.

It is an amenable number.

121083145 is a deficient number, since it is larger than the sum of its proper divisors (24216635).

121083145 is an equidigital number, since it uses as much as digits as its factorization.

121083145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24216634.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 121083145 is about 11003.7786691663. The cubic root of 121083145 is about 494.7220083143.

The spelling of 121083145 in words is "one hundred twenty-one million, eighty-three thousand, one hundred forty-five".