222121000201 has 4 divisors (see below), whose sum is σ = 222147100692. Its totient is φ = 222094899712.

The previous prime is 222121000181. The next prime is 222121000217. The reversal of 222121000201 is 102000121222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 102000121222 = 2 ⋅51000060611.

It can be written as a sum of positive squares in 2 ways, for example, as 188617358601 + 33503641600 = 434301^2 + 183040^2 .

It is a cyclic number.

It is not a de Polignac number, because 222121000201 - 2¹⁵ = 222120967433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222121000301) 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, 13037476 + ... + 13054501.

It is an arithmetic number, because the mean of its divisors is an integer number (55536775173).

Almost surely, 2^222121000201 is an apocalyptic number.

It is an amenable number.

222121000201 is a deficient number, since it is larger than the sum of its proper divisors (26100491).

222121000201 is an equidigital number, since it uses as much as digits as its factorization.

222121000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26100490.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 222121000201 its reverse (102000121222), we get a palindrome (324121121423).

The spelling of 222121000201 in words is "two hundred twenty-two billion, one hundred twenty-one million, two hundred one", and thus it is an aban number.