21221011200002 has 8 divisors (see below), whose sum is σ = 31831635133200. Its totient is φ = 10610466155604.

The previous prime is 21221011199989. The next prime is 21221011200017. The reversal of 21221011200002 is 20000211012212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21221011200002² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21221011200002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19045052 + ... + 20128487.

It is an arithmetic number, because the mean of its divisors is an integer number (3978954391650).

Almost surely, 2^{21221011200002} is an apocalyptic number.

21221011200002 is a deficient number, since it is larger than the sum of its proper divisors (10610623933198).

21221011200002 is a wasteful number, since it uses less digits than its factorization.

21221011200002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39444400.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21221011200002 its reverse (20000211012212), we get a palindrome (41221222212214).

The spelling of 21221011200002 in words is "twenty-one trillion, two hundred twenty-one billion, eleven million, two hundred thousand, two".