121156053 has 4 divisors (see below), whose sum is σ = 161541408. Its totient is φ = 80770700.

The previous prime is 121156037. The next prime is 121156073. The reversal of 121156053 is 350651121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 350651121 = 3 ⋅116883707.

It is a cyclic number.

It is not a de Polignac number, because 121156053 - 2⁴ = 121156037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121156003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20192673 + ... + 20192678.

It is an arithmetic number, because the mean of its divisors is an integer number (40385352).

Almost surely, 2^121156053 is an apocalyptic number.

It is an amenable number.

121156053 is a deficient number, since it is larger than the sum of its proper divisors (40385355).

121156053 is an equidigital number, since it uses as much as digits as its factorization.

121156053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40385354.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 121156053 is about 11007.0910326026. The cubic root of 121156053 is about 494.8212843259.

The spelling of 121156053 in words is "one hundred twenty-one million, one hundred fifty-six thousand, fifty-three".