21032013020212 has 12 divisors (see below), whose sum is σ = 37409400208516. Its totient is φ = 10343612960640.

The previous prime is 21032013020191. The next prime is 21032013020219. The reversal of 21032013020212 is 21202031023012.

It can be written as a sum of positive squares in 2 ways, for example, as 8373175598736 + 12658837421476 = 2893644^2 + 3557926^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21032013020212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032013020219) 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, 43098387093 + ... + 43098387580.

Almost surely, 2^{21032013020212} is an apocalyptic number.

It is an amenable number.

21032013020212 is a deficient number, since it is larger than the sum of its proper divisors (16377387188304).

21032013020212 is a wasteful number, since it uses less digits than its factorization.

21032013020212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86196774738 (or 86196774736 counting only the distinct ones).

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

Adding to 21032013020212 its reverse (21202031023012), we get a palindrome (42234044043224).

The spelling of 21032013020212 in words is "twenty-one trillion, thirty-two billion, thirteen million, twenty thousand, two hundred twelve".