222120222121001 has 4 divisors (see below), whose sum is σ = 222120344149392. Its totient is φ = 222120100092612.

The previous prime is 222120222120961. The next prime is 222120222121019. The reversal of 222120222121001 is 100121222021222.

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 222120222121001 - 2¹⁴ = 222120222104617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222120222121081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58241855 + ... + 61938308.

It is an arithmetic number, because the mean of its divisors is an integer number (55530086037348).

Almost surely, 2^{222120222121001} is an apocalyptic number.

It is an amenable number.

222120222121001 is a deficient number, since it is larger than the sum of its proper divisors (122028391).

222120222121001 is a wasteful number, since it uses less digits than its factorization.

222120222121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122028390.

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

Adding to 222120222121001 its reverse (100121222021222), we get a palindrome (322241444142223).

The spelling of 222120222121001 in words is "two hundred twenty-two trillion, one hundred twenty billion, two hundred twenty-two million, one hundred twenty-one thousand, one".