121250961 has 36 divisors (see below), whose sum is σ = 194104092. Its totient is φ = 72503424.

The previous prime is 121250923. The next prime is 121250971. The reversal of 121250961 is 169052121.

It can be written as a sum of positive squares in 6 ways, for example, as 11943936 + 109307025 = 3456^2 + 10455^2 .

It is not a de Polignac number, because 121250961 - 2⁹ = 121250449 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121250971) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 159795 + ... + 160551.

Almost surely, 2^121250961 is an apocalyptic number.

It is an amenable number.

121250961 is a deficient number, since it is larger than the sum of its proper divisors (72853131).

121250961 is a wasteful number, since it uses less digits than its factorization.

121250961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 121250961 is about 11011.4014094483. The cubic root of 121250961 is about 494.9504572393.

The spelling of 121250961 in words is "one hundred twenty-one million, two hundred fifty thousand, nine hundred sixty-one".