121212202222 has 16 divisors (see below), whose sum is σ = 185745609792. Its totient is φ = 59297816160.

The previous prime is 121212202211. The next prime is 121212202289. The reversal of 121212202222 is 222202212121.

It is a self number, because there is not a number n which added to its sum of digits gives 121212202222.

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, 96328 + ... + 501700.

It is an arithmetic number, because the mean of its divisors is an integer number (11609100612).

Almost surely, 2^121212202222 is an apocalyptic number.

121212202222 is a deficient number, since it is larger than the sum of its proper divisors (64533407570).

121212202222 is a wasteful number, since it uses less digits than its factorization.

121212202222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408603.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 121212202222 its reverse (222202212121), we get a palindrome (343414414343).

The spelling of 121212202222 in words is "one hundred twenty-one billion, two hundred twelve million, two hundred two thousand, two hundred twenty-two".