121613667 has 32 divisors (see below), whose sum is σ = 191407104. Its totient is φ = 67238400.

The previous prime is 121613659. The next prime is 121613669. The reversal of 121613667 is 766316121.

It is not a de Polignac number, because 121613667 - 2³ = 121613659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121613669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117442 + ... + 118472.

It is an arithmetic number, because the mean of its divisors is an integer number (5981472).

Almost surely, 2^121613667 is an apocalyptic number.

121613667 is a deficient number, since it is larger than the sum of its proper divisors (69793437).

121613667 is a wasteful number, since it uses less digits than its factorization.

121613667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219.

The product of its digits is 9072, while the sum is 33.

The square root of 121613667 is about 11027.8586770053. The cubic root of 121613667 is about 495.4434919367.

Adding to 121613667 its reverse (766316121), we get a palindrome (887929788).

The spelling of 121613667 in words is "one hundred twenty-one million, six hundred thirteen thousand, six hundred sixty-seven".