22021001201021 has 16 divisors (see below), whose sum is σ = 23085066977280. Its totient is φ = 20965901454960.

The previous prime is 22021001200997. The next prime is 22021001201053. The reversal of 22021001201021 is 12010210012022.

It is a cyclic number.

It is not a de Polignac number, because 22021001201021 - 2¹⁰ = 22021001199997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021001200987 and 22021001201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021001201071) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11200676 + ... + 13019106.

It is an arithmetic number, because the mean of its divisors is an integer number (1442816686080).

Almost surely, 2^{22021001201021} is an apocalyptic number.

It is an amenable number.

22021001201021 is a deficient number, since it is larger than the sum of its proper divisors (1064065776259).

22021001201021 is a wasteful number, since it uses less digits than its factorization.

22021001201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1820896.

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

Adding to 22021001201021 its reverse (12010210012022), we get a palindrome (34031211213043).

The spelling of 22021001201021 in words is "twenty-two trillion, twenty-one billion, one million, two hundred one thousand, twenty-one".