21140433033210 has 80 divisors (see below), whose sum is σ = 57347322423336. Its totient is φ = 5587559857152.

The previous prime is 21140433033193. The next prime is 21140433033217. The reversal of 21140433033210 is 1233033404112.

It is a happy number.

21140433033210 is a `hidden beast` number, since 2 + 1 + 1 + 4 + 0 + 4 + 330 + 3 + 321 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 17756337985929 + 3384095047281 = 4213827^2 + 1839591^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21140433033217) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 115392099 + ... + 115575158.

Almost surely, 2^{21140433033210} is an apocalyptic number.

21140433033210 is an abundant number, since it is smaller than the sum of its proper divisors (36206889390126).

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

21140433033210 is a wasteful number, since it uses less digits than its factorization.

21140433033210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230967389 (or 230967380 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 21140433033210 its reverse (1233033404112), we get a palindrome (22373466437322).

The spelling of 21140433033210 in words is "twenty-one trillion, one hundred forty billion, four hundred thirty-three million, thirty-three thousand, two hundred ten".