21199062 has 16 divisors (see below), whose sum is σ = 42522480. Its totient is φ = 7045632.

The previous prime is 21199037. The next prime is 21199063. The reversal of 21199062 is 26099112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21199063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2887 + ... + 7122.

It is an arithmetic number, because the mean of its divisors is an integer number (2657655).

Almost surely, 2^21199062 is an apocalyptic number.

21199062 is an abundant number, since it is smaller than the sum of its proper divisors (21323418).

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

21199062 is a wasteful number, since it uses less digits than its factorization.

21199062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10367.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 21199062 is about 4604.2439118709. The cubic root of 21199062 is about 276.7614188127.

The spelling of 21199062 in words is "twenty-one million, one hundred ninety-nine thousand, sixty-two".