121251007 has 2 divisors, whose sum is σ = 121251008. Its totient is φ = 121251006.

The previous prime is 121250971. The next prime is 121251041. The reversal of 121251007 is 700152121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121251007 - 2¹⁹ = 120726719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121251047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60625503 + 60625504.

It is an arithmetic number, because the mean of its divisors is an integer number (60625504).

Almost surely, 2^121251007 is an apocalyptic number.

121251007 is a deficient number, since it is larger than the sum of its proper divisors (1).

121251007 is an equidigital number, since it uses as much as digits as its factorization.

121251007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 121251007 is about 11011.4034981922. The cubic root of 121251007 is about 494.9505198305.

The spelling of 121251007 in words is "one hundred twenty-one million, two hundred fifty-one thousand, seven".