21196125 has 48 divisors (see below), whose sum is σ = 38840256. Its totient is φ = 11119200.

The previous prime is 21196103. The next prime is 21196159. The reversal of 21196125 is 52169112.

It is not a de Polignac number, because 21196125 - 2⁷ = 21195997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 93262 + ... + 93488.

It is an arithmetic number, because the mean of its divisors is an integer number (809172).

Almost surely, 2^21196125 is an apocalyptic number.

21196125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

21196125 is a deficient number, since it is larger than the sum of its proper divisors (17644131).

21196125 is a wasteful number, since it uses less digits than its factorization.

21196125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331 (or 318 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 21196125 is about 4603.9249559479. The cubic root of 21196125 is about 276.7486370235.

It can be divided in two parts, 21196 and 125, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 21196125 in words is "twenty-one million, one hundred ninety-six thousand, one hundred twenty-five".