21110152 has 32 divisors (see below), whose sum is σ = 45518400. Its totient is φ = 8990784.

The previous prime is 21110149. The next prime is 21110179. The reversal of 21110152 is 25101112.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8599 + ... + 10777.

It is an arithmetic number, because the mean of its divisors is an integer number (1422450).

Almost surely, 2^21110152 is an apocalyptic number.

It is an amenable number.

21110152 is an abundant number, since it is smaller than the sum of its proper divisors (24408248).

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

21110152 is a wasteful number, since it uses less digits than its factorization.

21110152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2365 (or 2361 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 13.

The square root of 21110152 is about 4594.5785443281. The cubic root of 21110152 is about 276.3739592331.

Adding to 21110152 its reverse (25101112), we get a palindrome (46211264).

The spelling of 21110152 in words is "twenty-one million, one hundred ten thousand, one hundred fifty-two".