1212102100222 has 48 divisors (see below), whose sum is σ = 2052750112560. Its totient is φ = 533564418816.

The previous prime is 1212102100171. The next prime is 1212102100271. The reversal of 1212102100222 is 2220012012121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1212102100196 and 1212102100205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4645654 + ... + 4899622.

It is an arithmetic number, because the mean of its divisors is an integer number (42765627345).

Almost surely, 2^{1212102100222} is an apocalyptic number.

1212102100222 is a deficient number, since it is larger than the sum of its proper divisors (840648012338).

1212102100222 is a wasteful number, since it uses less digits than its factorization.

1212102100222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254377 (or 254354 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212102100222 its reverse (2220012012121), we get a palindrome (3432114112343).

The spelling of 1212102100222 in words is "one trillion, two hundred twelve billion, one hundred two million, one hundred thousand, two hundred twenty-two".