3121212211222 has 16 divisors (see below), whose sum is σ = 5350710620160. Its totient is φ = 1337647097448.

The previous prime is 3121212211213. The next prime is 3121212211259. The reversal of 3121212211222 is 2221122121213.

It is a junction number, because it is equal to n+sod(n) for n = 3121212211193 and 3121212211202.

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, 43179 + ... + 2498857.

It is an arithmetic number, because the mean of its divisors is an integer number (334419413760).

Almost surely, 2^{3121212211222} is an apocalyptic number.

3121212211222 is a deficient number, since it is larger than the sum of its proper divisors (2229498408938).

3121212211222 is a wasteful number, since it uses less digits than its factorization.

3121212211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2546475.

The product of its digits is 384, while the sum is 22.

Adding to 3121212211222 its reverse (2221122121213), we get a palindrome (5342334332435).

Subtracting from 3121212211222 its reverse (2221122121213), we obtain a palindrome (900090090009).

The spelling of 3121212211222 in words is "three trillion, one hundred twenty-one billion, two hundred twelve million, two hundred eleven thousand, two hundred twenty-two".