121634669 has 16 divisors (see below), whose sum is σ = 136464384. Its totient is φ = 107654400.

The previous prime is 121634647. The next prime is 121634683. The reversal of 121634669 is 966436121.

It is a cyclic number.

It is not a de Polignac number, because 121634669 - 2¹² = 121630573 is a prime.

It is a super-2 number, since 2×121634669² = 29589985405479122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121639669) 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, 44204 + ... + 46874.

It is an arithmetic number, because the mean of its divisors is an integer number (8529024).

Almost surely, 2^121634669 is an apocalyptic number.

It is an amenable number.

121634669 is a deficient number, since it is larger than the sum of its proper divisors (14829715).

121634669 is a wasteful number, since it uses less digits than its factorization.

121634669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828.

The product of its digits is 46656, while the sum is 38.

The square root of 121634669 is about 11028.8108606504. The cubic root of 121634669 is about 495.4720104017.

The spelling of 121634669 in words is "one hundred twenty-one million, six hundred thirty-four thousand, six hundred sixty-nine".