222101211121212 has 24 divisors (see below), whose sum is σ = 518236553998800. Its totient is φ = 74033680652416.

The previous prime is 222101211121211. The next prime is 222101211121241. The reversal of 222101211121212 is 212121112101222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222101211121211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11266864 + ... + 23898632.

It is an arithmetic number, because the mean of its divisors is an integer number (21593189749950).

Almost surely, 2^{222101211121212} is an apocalyptic number.

It is an amenable number.

222101211121212 is an abundant number, since it is smaller than the sum of its proper divisors (296135342877588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222101211121212 is a wasteful number, since it uses less digits than its factorization.

222101211121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14097005 (or 14097003 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 222101211121212 its reverse (212121112101222), we get a palindrome (434222323222434).

The spelling of 222101211121212 in words is "two hundred twenty-two trillion, one hundred one billion, two hundred eleven million, one hundred twenty-one thousand, two hundred twelve".