21132213202 has 8 divisors (see below), whose sum is σ = 31834364796. Its totient is φ = 10520758272.

The previous prime is 21132213199. The next prime is 21132213209. The reversal of 21132213202 is 20231223112.

It can be written as a sum of positive squares in 2 ways, for example, as 20886319441 + 245893761 = 144521^2 + 15681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21132213202.

It is not an unprimeable number, because it can be changed into a prime (21132213209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22673583 + ... + 22674514.

Almost surely, 2^21132213202 is an apocalyptic number.

21132213202 is a deficient number, since it is larger than the sum of its proper divisors (10702151594).

21132213202 is a wasteful number, since it uses less digits than its factorization.

21132213202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45348332.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21132213202 its reverse (20231223112), we get a palindrome (41363436314).

The spelling of 21132213202 in words is "twenty-one billion, one hundred thirty-two million, two hundred thirteen thousand, two hundred two".