121061959 has 4 divisors (see below), whose sum is σ = 122720416. Its totient is φ = 119403504.

The previous prime is 121061873. The next prime is 121061987. The reversal of 121061959 is 959160121.

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: 959160121 = 443 ⋅2165147.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121061959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011959) 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, 829119 + ... + 829264.

It is an arithmetic number, because the mean of its divisors is an integer number (30680104).

Almost surely, 2^121061959 is an apocalyptic number.

121061959 is a deficient number, since it is larger than the sum of its proper divisors (1658457).

121061959 is an equidigital number, since it uses as much as digits as its factorization.

121061959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658456.

The product of its (nonzero) digits is 4860, while the sum is 34.

The square root of 121061959 is about 11002.8159577446. The cubic root of 121061959 is about 494.6931526828.

The spelling of 121061959 in words is "one hundred twenty-one million, sixty-one thousand, nine hundred fifty-nine".