22201001012221 has 32 divisors (see below), whose sum is σ = 24135593328000. Its totient is φ = 20344446093312.

The previous prime is 22201001012219. The next prime is 22201001012227. The reversal of 22201001012221 is 12221010010222.

It is a happy number.

It is not a de Polignac number, because 22201001012221 - 2¹ = 22201001012219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22201001012195 and 22201001012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201001012227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50559150 + ... + 50996368.

It is an arithmetic number, because the mean of its divisors is an integer number (754237291500).

Almost surely, 2^{22201001012221} is an apocalyptic number.

It is an amenable number.

22201001012221 is a deficient number, since it is larger than the sum of its proper divisors (1934592315779).

22201001012221 is a wasteful number, since it uses less digits than its factorization.

22201001012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437821.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22201001012221 its reverse (12221010010222), we get a palindrome (34422011022443).

The spelling of 22201001012221 in words is "twenty-two trillion, two hundred one billion, one million, twelve thousand, two hundred twenty-one".