222121002212 has 6 divisors (see below), whose sum is σ = 388711753878. Its totient is φ = 111060501104.

The previous prime is 222121002193. The next prime is 222121002241. The reversal of 222121002212 is 212200121222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 159812854756 + 62308147456 = 399766^2 + 249616^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27765125273 + ... + 27765125280.

It is an arithmetic number, because the mean of its divisors is an integer number (64785292313).

Almost surely, 2^222121002212 is an apocalyptic number.

It is an amenable number.

222121002212 is a deficient number, since it is larger than the sum of its proper divisors (166590751666).

222121002212 is a wasteful number, since it uses less digits than its factorization.

222121002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55530250557 (or 55530250555 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222121002212 its reverse (212200121222), we get a palindrome (434321123434).

The spelling of 222121002212 in words is "two hundred twenty-two billion, one hundred twenty-one million, two thousand, two hundred twelve".