21199662 has 24 divisors (see below), whose sum is σ = 50108760. Its totient is φ = 6424080.

The previous prime is 21199643. The next prime is 21199681. The reversal of 21199662 is 26699112.

It is an interprime number because it is at equal distance from previous prime (21199643) and next prime (21199681).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53337 + ... + 53732.

It is an arithmetic number, because the mean of its divisors is an integer number (2087865).

Almost surely, 2^21199662 is an apocalyptic number.

21199662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21199662 is an abundant number, since it is smaller than the sum of its proper divisors (28909098).

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

21199662 is a wasteful number, since it uses less digits than its factorization.

21199662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107088 (or 107085 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 21199662 is about 4604.3090686877. The cubic root of 21199662 is about 276.7640298604.

It can be divided in two parts, 2119 and 9662, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 21199662 in words is "twenty-one million, one hundred ninety-nine thousand, six hundred sixty-two".