16121116 has 48 divisors (see below), whose sum is σ = 32514048. Its totient is φ = 6926400.

The previous prime is 16121107. The next prime is 16121143. The reversal of 16121116 is 61112161.

It is a junction number, because it is equal to n+sod(n) for n = 16121093 and 16121102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72181 + ... + 72403.

It is an arithmetic number, because the mean of its divisors is an integer number (677376).

Almost surely, 2^16121116 is an apocalyptic number.

It is an amenable number.

16121116 is an abundant number, since it is smaller than the sum of its proper divisors (16392932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16121116 is a wasteful number, since it uses less digits than its factorization.

16121116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 320 counting only the distinct ones).

The product of its digits is 72, while the sum is 19.

The square root of 16121116 is about 4015.1109573709. The cubic root of 16121116 is about 252.6184315191.

Adding to 16121116 its reverse (61112161), we get a palindrome (77233277).

The spelling of 16121116 in words is "sixteen million, one hundred twenty-one thousand, one hundred sixteen".