222122021221001 has 4 divisors (see below), whose sum is σ = 242314932241104. Its totient is φ = 201929110200900.

The previous prime is 222122021220973. The next prime is 222122021221007. The reversal of 222122021221001 is 100122120221222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222122021221001 - 2¹⁸ = 222122020958857 is a prime.

It is a super-2 number, since 2×222122021221001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222122021221007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10096455510035 + ... + 10096455510056.

It is an arithmetic number, because the mean of its divisors is an integer number (60578733060276).

Almost surely, 2^{222122021221001} is an apocalyptic number.

It is an amenable number.

222122021221001 is a deficient number, since it is larger than the sum of its proper divisors (20192911020103).

222122021221001 is a wasteful number, since it uses less digits than its factorization.

222122021221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20192911020102.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222122021221001 its reverse (100122120221222), we get a palindrome (322244141442223).

The spelling of 222122021221001 in words is "two hundred twenty-two trillion, one hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, one".