121100390 has 16 divisors (see below), whose sum is σ = 218106000. Its totient is φ = 48412320.

The previous prime is 121100383. The next prime is 121100407. The reversal of 121100390 is 93001121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32861 + ... + 36359.

It is an arithmetic number, because the mean of its divisors is an integer number (13631625).

Almost surely, 2^121100390 is an apocalyptic number.

121100390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121100390 is a deficient number, since it is larger than the sum of its proper divisors (97005610).

121100390 is a wasteful number, since it uses less digits than its factorization.

121100390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6967.

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

The square root of 121100390 is about 11004.5622357275. The cubic root of 121100390 is about 494.7454937632.

The spelling of 121100390 in words is "one hundred twenty-one million, one hundred thousand, three hundred ninety".