21021001122232 has 16 divisors (see below), whose sum is σ = 39414797323200. Its totient is φ = 10510388502720.

The previous prime is 21021001122229. The next prime is 21021001122263. The reversal of 21021001122232 is 23222110012012.

It is a congruent number.

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, 13207357 + ... + 14713132.

It is an arithmetic number, because the mean of its divisors is an integer number (2463424832700).

Almost surely, 2^{21021001122232} is an apocalyptic number.

It is an amenable number.

21021001122232 is a deficient number, since it is larger than the sum of its proper divisors (18393796200968).

21021001122232 is a wasteful number, since it uses less digits than its factorization.

21021001122232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28014606 (or 28014602 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21021001122232 its reverse (23222110012012), we get a palindrome (44243111134244).

The spelling of 21021001122232 in words is "twenty-one trillion, twenty-one billion, one million, one hundred twenty-two thousand, two hundred thirty-two".