121267616 has 12 divisors (see below), whose sum is σ = 238745682. Its totient is φ = 60633792.

The previous prime is 121267609. The next prime is 121267639. The reversal of 121267616 is 616762121.

It can be written as a sum of positive squares in only one way, i.e., 81072016 + 40195600 = 9004^2 + 6340^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 3789613 = 121267616 / (1 + 2 + 1 + 2 + 6 + 7 + 6 + 1 + 6).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1894775 + ... + 1894838.

Almost surely, 2^121267616 is an apocalyptic number.

121267616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

121267616 is a deficient number, since it is larger than the sum of its proper divisors (117478066).

121267616 is an equidigital number, since it uses as much as digits as its factorization.

121267616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789623 (or 3789615 counting only the distinct ones).

The product of its digits is 6048, while the sum is 32.

The square root of 121267616 is about 11012.1576450757. The cubic root of 121267616 is about 494.9731182899.

The spelling of 121267616 in words is "one hundred twenty-one million, two hundred sixty-seven thousand, six hundred sixteen".