121061659 has 4 divisors (see below), whose sum is σ = 121084480. Its totient is φ = 121038840.

The previous prime is 121061657. The next prime is 121061671. The reversal of 121061659 is 956160121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121061659 - 2¹ = 121061657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121061659.

It is not an unprimeable number, because it can be changed into a prime (121061651) 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, 1174 + ... + 15604.

It is an arithmetic number, because the mean of its divisors is an integer number (30271120).

Almost surely, 2^121061659 is an apocalyptic number.

121061659 is a deficient number, since it is larger than the sum of its proper divisors (22821).

121061659 is an equidigital number, since it uses as much as digits as its factorization.

121061659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22820.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 121061659 is about 11002.8023248625. The cubic root of 121061659 is about 494.6927440544.

The spelling of 121061659 in words is "one hundred twenty-one million, sixty-one thousand, six hundred fifty-nine".