121150407 has 16 divisors (see below), whose sum is σ = 192637440. Its totient is φ = 66218592.

The previous prime is 121150397. The next prime is 121150417. The reversal of 121150407 is 704051121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121150397) and next prime (121150417).

It is not a de Polignac number, because 121150407 - 2⁸ = 121150151 is a prime.

It is a super-2 number, since 2×121150407² = 29354842232531298, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121150417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124932 + ... + 125897.

It is an arithmetic number, because the mean of its divisors is an integer number (12039840).

Almost surely, 2^121150407 is an apocalyptic number.

121150407 is a deficient number, since it is larger than the sum of its proper divisors (71487033).

121150407 is a wasteful number, since it uses less digits than its factorization.

121150407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250862.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 121150407 is about 11006.8345585822. The cubic root of 121150407 is about 494.8135978084.

The spelling of 121150407 in words is "one hundred twenty-one million, one hundred fifty thousand, four hundred seven".