121137669 has 12 divisors (see below), whose sum is σ = 181010700. Its totient is φ = 77973504.

The previous prime is 121137661. The next prime is 121137697. The reversal of 121137669 is 966731121.

It can be written as a sum of positive squares in 2 ways, for example, as 82573569 + 38564100 = 9087^2 + 6210^2 .

It is not a de Polignac number, because 121137669 - 2³ = 121137661 is a prime.

It is a super-2 number, since 2×121137669² = 29348669701507122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121137661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231804 + ... + 232325.

It is an arithmetic number, because the mean of its divisors is an integer number (15084225).

Almost surely, 2^121137669 is an apocalyptic number.

It is an amenable number.

121137669 is a deficient number, since it is larger than the sum of its proper divisors (59873031).

121137669 is a wasteful number, since it uses less digits than its factorization.

121137669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464164 (or 464161 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 121137669 is about 11006.2559028945. The cubic root of 121137669 is about 494.7962552981.

The spelling of 121137669 in words is "one hundred twenty-one million, one hundred thirty-seven thousand, six hundred sixty-nine".