121050890 has 16 divisors (see below), whose sum is σ = 221585760. Its totient is φ = 47599440.

The previous prime is 121050847. The next prime is 121050893. The reversal of 121050890 is 98050121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121050893) 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, 101996 + ... + 103175.

It is an arithmetic number, because the mean of its divisors is an integer number (13849110).

Almost surely, 2^121050890 is an apocalyptic number.

121050890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121050890 is a deficient number, since it is larger than the sum of its proper divisors (100534870).

121050890 is a wasteful number, since it uses less digits than its factorization.

121050890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205237.

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 121050890 is about 11002.3129386507. The cubic root of 121050890 is about 494.6780752094.

The spelling of 121050890 in words is "one hundred twenty-one million, fifty thousand, eight hundred ninety".