12121210022222 has 16 divisors (see below), whose sum is σ = 20779329116160. Its totient is φ = 5194776311448.

The previous prime is 12121210022197. The next prime is 12121210022263. The reversal of 12121210022222 is 22222001212121.

It is a junction number, because it is equal to n+sod(n) for n = 12121210022194 and 12121210022203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476363 + ... + 4946649.

It is an arithmetic number, because the mean of its divisors is an integer number (1298708069760).

Almost surely, 2^{12121210022222} is an apocalyptic number.

12121210022222 is a deficient number, since it is larger than the sum of its proper divisors (8658119093938).

12121210022222 is a wasteful number, since it uses less digits than its factorization.

12121210022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4663975.

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

Adding to 12121210022222 its reverse (22222001212121), we get a palindrome (34343211234343).

The spelling of 12121210022222 in words is "twelve trillion, one hundred twenty-one billion, two hundred ten million, twenty-two thousand, two hundred twenty-two".