16121366 has 4 divisors (see below), whose sum is σ = 24182052. Its totient is φ = 8060682.

The previous prime is 16121363. The next prime is 16121387. The reversal of 16121366 is 66312161.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16121363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4030340 + ... + 4030343.

It is an arithmetic number, because the mean of its divisors is an integer number (6045513).

Almost surely, 2^16121366 is an apocalyptic number.

16121366 is a deficient number, since it is larger than the sum of its proper divisors (8060686).

16121366 is an equidigital number, since it uses as much as digits as its factorization.

16121366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8060685.

The product of its digits is 1296, while the sum is 26.

The square root of 16121366 is about 4015.1420896402. The cubic root of 16121366 is about 252.6197373485.

The spelling of 16121366 in words is "sixteen million, one hundred twenty-one thousand, three hundred sixty-six".