21221200331302 has 32 divisors (see below), whose sum is σ = 32561142566400. Its totient is φ = 10368221376480.

The previous prime is 21221200331299. The next prime is 21221200331311. The reversal of 21221200331302 is 20313300212212.

It is a super-2 number, since 2×21221200331302² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 165598449 + ... + 165726547.

It is an arithmetic number, because the mean of its divisors is an integer number (1017535705200).

Almost surely, 2^{21221200331302} is an apocalyptic number.

21221200331302 is a deficient number, since it is larger than the sum of its proper divisors (11339942235098).

21221200331302 is a wasteful number, since it uses less digits than its factorization.

21221200331302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130956.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21221200331302 its reverse (20313300212212), we get a palindrome (41534500543514).

The spelling of 21221200331302 in words is "twenty-one trillion, two hundred twenty-one billion, two hundred million, three hundred thirty-one thousand, three hundred two".