21133021002 has 16 divisors (see below), whose sum is σ = 42369386880. Its totient is φ = 7027116192.

The previous prime is 21133020947. The next prime is 21133021003. The reversal of 21133021002 is 20012033112.

It is not an unprimeable number, because it can be changed into a prime (21133021003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4303378 + ... + 4308285.

It is an arithmetic number, because the mean of its divisors is an integer number (2648086680).

Almost surely, 2^21133021002 is an apocalyptic number.

21133021002 is an abundant number, since it is smaller than the sum of its proper divisors (21236365878).

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

21133021002 is a wasteful number, since it uses less digits than its factorization.

21133021002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8612077.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21133021002 its reverse (20012033112), we get a palindrome (41145054114).

The spelling of 21133021002 in words is "twenty-one billion, one hundred thirty-three million, twenty-one thousand, two".