21121332002 has 32 divisors (see below), whose sum is σ = 32648616000. Its totient is φ = 10244145600.

The previous prime is 21121331971. The next prime is 21121332017. The reversal of 21121332002 is 20023312112.

It is a super-2 number, since 2×21121332002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2794124 + ... + 2801672.

It is an arithmetic number, because the mean of its divisors is an integer number (1020269250).

Almost surely, 2^21121332002 is an apocalyptic number.

21121332002 is a deficient number, since it is larger than the sum of its proper divisors (11527283998).

21121332002 is a wasteful number, since it uses less digits than its factorization.

21121332002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7922.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21121332002 its reverse (20023312112), we get a palindrome (41144644114).

The spelling of 21121332002 in words is "twenty-one billion, one hundred twenty-one million, three hundred thirty-two thousand, two".