222121000200122 has 4 divisors (see below), whose sum is σ = 333181500300186. Its totient is φ = 111060500100060.

The previous prime is 222121000200091. The next prime is 222121000200139. The reversal of 222121000200122 is 221002000121222.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 193017143949721 + 29103856250401 = 13893061^2 + 5394799^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 222121000200122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55530250050029 + ... + 55530250050032.

Almost surely, 2^{222121000200122} is an apocalyptic number.

222121000200122 is a deficient number, since it is larger than the sum of its proper divisors (111060500100064).

222121000200122 is a wasteful number, since it uses less digits than its factorization.

222121000200122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111060500100063.

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

Adding to 222121000200122 its reverse (221002000121222), we get a palindrome (443123000321344).

The spelling of 222121000200122 in words is "two hundred twenty-two trillion, one hundred twenty-one billion, two hundred thousand, one hundred twenty-two".