222100222121012 has 6 divisors (see below), whose sum is σ = 388675388711778. Its totient is φ = 111050111060504.

The previous prime is 222100222120967. The next prime is 222100222121023. The reversal of 222100222121012 is 210121222001222.

It can be written as a sum of positive squares in only one way, i.e., 133923126570256 + 88177095550756 = 11572516^2 + 9390266^2 .

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, 27762527765123 + ... + 27762527765130.

It is an arithmetic number, because the mean of its divisors is an integer number (64779231451963).

Almost surely, 2^{222100222121012} is an apocalyptic number.

It is an amenable number.

222100222121012 is a deficient number, since it is larger than the sum of its proper divisors (166575166590766).

222100222121012 is a wasteful number, since it uses less digits than its factorization.

222100222121012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55525055530257 (or 55525055530255 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 222100222121012 its reverse (210121222001222), we get a palindrome (432221444122234).

The spelling of 222100222121012 in words is "two hundred twenty-two trillion, one hundred billion, two hundred twenty-two million, one hundred twenty-one thousand, twelve".