121250121 has 8 divisors (see below), whose sum is σ = 161866560. Its totient is φ = 80733552.

The previous prime is 121250119. The next prime is 121250141. The reversal of 121250121 is 121052121.

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

It is not a de Polignac number, because 121250121 - 2¹ = 121250119 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 121250121.

It is not an unprimeable number, because it can be changed into a prime (121250111) 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, 22086 + ... + 27023.

It is an arithmetic number, because the mean of its divisors is an integer number (20233320).

Almost surely, 2^121250121 is an apocalyptic number.

It is an amenable number.

121250121 is a deficient number, since it is larger than the sum of its proper divisors (40616439).

121250121 is an equidigital number, since it uses as much as digits as its factorization.

121250121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49935.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 121250121 is about 11011.3632670982. The cubic root of 121250121 is about 494.9493142674.

The spelling of 121250121 in words is "one hundred twenty-one million, two hundred fifty thousand, one hundred twenty-one".