121053261 has 32 divisors (see below), whose sum is σ = 188006400. Its totient is φ = 67858560.

The previous prime is 121053253. The next prime is 121053263. The reversal of 121053261 is 162350121.

It is not a de Polignac number, because 121053261 - 2³ = 121053253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121053263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 446556 + ... + 446826.

It is an arithmetic number, because the mean of its divisors is an integer number (5875200).

Almost surely, 2^121053261 is an apocalyptic number.

It is an amenable number.

121053261 is a deficient number, since it is larger than the sum of its proper divisors (66953139).

121053261 is a wasteful number, since it uses less digits than its factorization.

121053261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 609.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 121053261 is about 11002.4206881940. The cubic root of 121053261 is about 494.6813049091.

The spelling of 121053261 in words is "one hundred twenty-one million, fifty-three thousand, two hundred sixty-one".