212131313220122 has 8 divisors (see below), whose sum is σ = 318304359974016. Its totient is φ = 106029859895452.

The previous prime is 212131313220091. The next prime is 212131313220163. The reversal of 212131313220122 is 221022313131212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 212131313220091 and 212131313220100.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17898349898 + ... + 17898361749.

It is an arithmetic number, because the mean of its divisors is an integer number (39788044996752).

Almost surely, 2^{212131313220122} is an apocalyptic number.

212131313220122 is a deficient number, since it is larger than the sum of its proper divisors (106173046753894).

212131313220122 is a wasteful number, since it uses less digits than its factorization.

212131313220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35796714612.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 212131313220122 its reverse (221022313131212), we get a palindrome (433153626351334).

The spelling of 212131313220122 in words is "two hundred twelve trillion, one hundred thirty-one billion, three hundred thirteen million, two hundred twenty thousand, one hundred twenty-two".