21003134202 has 24 divisors (see below), whose sum is σ = 45597281184. Its totient is φ = 6987123144.

The previous prime is 21003134197. The next prime is 21003134209. The reversal of 21003134202 is 20243130012.

21003134202 is a `hidden beast` number, since 210 + 0 + 31 + 3 + 420 + 2 = 666.

It is a super-2 number, since 2×21003134202² (a number of 21 digits) contains 22 as substring.

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 (21003134209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1150828 + ... + 1168935.

It is an arithmetic number, because the mean of its divisors is an integer number (1899886716).

Almost surely, 2^21003134202 is an apocalyptic number.

21003134202 is an abundant number, since it is smaller than the sum of its proper divisors (24594146982).

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

21003134202 is a wasteful number, since it uses less digits than its factorization.

21003134202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320274 (or 2320271 counting only the distinct ones).

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

Adding to 21003134202 its reverse (20243130012), we get a palindrome (41246264214).

The spelling of 21003134202 in words is "twenty-one billion, three million, one hundred thirty-four thousand, two hundred two".