21132202 has 32 divisors (see below), whose sum is σ = 39618432. Its totient is φ = 8230464.

The previous prime is 21132197. The next prime is 21132211. The reversal of 21132202 is 20223112.

It is a super-3 number, since 3×21132202³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (13).

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, 11328 + ... + 13060.

It is an arithmetic number, because the mean of its divisors is an integer number (1238076).

Almost surely, 2^21132202 is an apocalyptic number.

21132202 is a deficient number, since it is larger than the sum of its proper divisors (18486230).

21132202 is a wasteful number, since it uses less digits than its factorization.

21132202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1822.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21132202 is about 4596.9774852614. The cubic root of 21132202 is about 276.4701518966.

Adding to 21132202 its reverse (20223112), we get a palindrome (41355314).

The spelling of 21132202 in words is "twenty-one million, one hundred thirty-two thousand, two hundred two".