121180090 has 8 divisors (see below), whose sum is σ = 218124180. Its totient is φ = 48472032.

The previous prime is 121180079. The next prime is 121180121. The reversal of 121180090 is 90081121.

It can be written as a sum of positive squares in 2 ways, for example, as 119836809 + 1343281 = 10947^2 + 1159^2 .

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

It is a super-2 number, since 2×121180090² = 29369228424816200, which contains 22 as substring.

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, 6058995 + ... + 6059014.

Almost surely, 2^121180090 is an apocalyptic number.

121180090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121180090 is a deficient number, since it is larger than the sum of its proper divisors (96944090).

121180090 is a wasteful number, since it uses less digits than its factorization.

121180090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12118016.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 121180090 is about 11008.1828654869. The cubic root of 121180090 is about 494.8540058516.

The spelling of 121180090 in words is "one hundred twenty-one million, one hundred eighty thousand, ninety".