222222201000221 has 16 divisors (see below), whose sum is σ = 231832760385600. Its totient is φ = 212744217504000.

The previous prime is 222222201000209. The next prime is 222222201000229. The reversal of 222222201000221 is 122000102222222.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222222201000221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222222201000193 and 222222201000202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222201000229) 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, 19789991 + ... + 28915188.

It is an arithmetic number, because the mean of its divisors is an integer number (14489547524100).

Almost surely, 2^{222222201000221} is an apocalyptic number.

It is an amenable number.

222222201000221 is a deficient number, since it is larger than the sum of its proper divisors (9610559385379).

222222201000221 is a wasteful number, since it uses less digits than its factorization.

222222201000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48706540.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 222222201000221 its reverse (122000102222222), we get a palindrome (344222303222443).

The spelling of 222222201000221 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, two hundred one million, two hundred twenty-one", and thus it is an aban number.