222121222100222 has 4 divisors (see below), whose sum is σ = 333181833150336. Its totient is φ = 111060611050110.

The previous prime is 222121222100209. The next prime is 222121222100251. The reversal of 222121222100222 is 222001222121222.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×222121222100222² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55530305525054 + ... + 55530305525057.

It is an arithmetic number, because the mean of its divisors is an integer number (83295458287584).

Almost surely, 2^{222121222100222} is an apocalyptic number.

222121222100222 is a deficient number, since it is larger than the sum of its proper divisors (111060611050114).

222121222100222 is a wasteful number, since it uses less digits than its factorization.

222121222100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111060611050113.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 222121222100222 its reverse (222001222121222), we get a palindrome (444122444221444).

The spelling of 222121222100222 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred thousand, two hundred twenty-two".