121058661 has 8 divisors (see below), whose sum is σ = 161467360. Its totient is φ = 80677872.

The previous prime is 121058659. The next prime is 121058669. The reversal of 121058661 is 166850121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121058661 - 2¹ = 121058659 is a prime.

It is a super-2 number, since 2×121058661² = 29310398806225842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121058669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7350 + ... + 17208.

It is an arithmetic number, because the mean of its divisors is an integer number (20183420).

Almost surely, 2^121058661 is an apocalyptic number.

It is an amenable number.

121058661 is a deficient number, since it is larger than the sum of its proper divisors (40408699).

121058661 is an equidigital number, since it uses as much as digits as its factorization.

121058661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13955.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 121058661 is about 11002.6660859993. Note that the first 3 decimals coincide. The cubic root of 121058661 is about 494.6886604574.

The spelling of 121058661 in words is "one hundred twenty-one million, fifty-eight thousand, six hundred sixty-one".