21322001102021 has 8 divisors (see below), whose sum is σ = 21779076321024. Its totient is φ = 20869385153760.

The previous prime is 21322001102009. The next prime is 21322001102027. The reversal of 21322001102021 is 12020110022312.

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

It is a cyclic number.

It is not a de Polignac number, because 21322001102021 - 2¹⁸ = 21322000839877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21322001102027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114808021 + ... + 1114827146.

It is an arithmetic number, because the mean of its divisors is an integer number (2722384540128).

Almost surely, 2^{21322001102021} is an apocalyptic number.

It is an amenable number.

21322001102021 is a deficient number, since it is larger than the sum of its proper divisors (457075219003).

21322001102021 is a wasteful number, since it uses less digits than its factorization.

21322001102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229635371.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21322001102021 its reverse (12020110022312), we get a palindrome (33342111124333).

The spelling of 21322001102021 in words is "twenty-one trillion, three hundred twenty-two billion, one million, one hundred two thousand, twenty-one".