21030413202 has 24 divisors (see below), whose sum is σ = 46797407436. Its totient is φ = 6820674336.

The previous prime is 21030413161. The next prime is 21030413203. The reversal of 21030413202 is 20231403012.

21030413202 is a `hidden beast` number, since 21 + 0 + 30 + 413 + 202 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 21028190121 + 2223081 = 145011^2 + 1491^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21030413203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15787933 + ... + 15789264.

Almost surely, 2^21030413202 is an apocalyptic number.

21030413202 is an abundant number, since it is smaller than the sum of its proper divisors (25766994234).

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

21030413202 is a wasteful number, since it uses less digits than its factorization.

21030413202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31577242 (or 31577239 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21030413202 its reverse (20231403012), we get a palindrome (41261816214).

The spelling of 21030413202 in words is "twenty-one billion, thirty million, four hundred thirteen thousand, two hundred two".