121084555 has 4 divisors (see below), whose sum is σ = 145301472. Its totient is φ = 96867640.

The previous prime is 121084531. The next prime is 121084567. The reversal of 121084555 is 555480121.

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

It is not a de Polignac number, because 121084555 - 2⁷ = 121084427 is a prime.

It is a super-2 number, since 2×121084555² = 29322938919096050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12108451 + ... + 12108460.

It is an arithmetic number, because the mean of its divisors is an integer number (36325368).

Almost surely, 2^121084555 is an apocalyptic number.

121084555 is a deficient number, since it is larger than the sum of its proper divisors (24216917).

121084555 is an equidigital number, since it uses as much as digits as its factorization.

121084555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24216916.

The product of its (nonzero) digits is 8000, while the sum is 31.

The square root of 121084555 is about 11003.8427378803. The cubic root of 121084555 is about 494.7239286347.

The spelling of 121084555 in words is "one hundred twenty-one million, eighty-four thousand, five hundred fifty-five".