121031090 has 8 divisors (see below), whose sum is σ = 217855980. Its totient is φ = 48412432.

The previous prime is 121031089. The next prime is 121031101. The reversal of 121031090 is 90130121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 118831801 + 2199289 = 10901^2 + 1483^2 .

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

It is a Curzon 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, 6051545 + ... + 6051564.

Almost surely, 2^121031090 is an apocalyptic number.

121031090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121031090 is a deficient number, since it is larger than the sum of its proper divisors (96824890).

121031090 is a wasteful number, since it uses less digits than its factorization.

121031090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103116.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 121031090 is about 11001.4130910533. The cubic root of 121031090 is about 494.6511026417.

The spelling of 121031090 in words is "one hundred twenty-one million, thirty-one thousand, ninety".