212131121222 has 8 divisors (see below), whose sum is σ = 318243765672. Its totient is φ = 106049866000.

The previous prime is 212131121219. The next prime is 212131121243. The reversal of 212131121222 is 222121131212.

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

It is a super-2 number, since 2×212131121222² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212131121194 and 212131121203.

It is a congruent number.

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, 7830404 + ... + 7857447.

It is an arithmetic number, because the mean of its divisors is an integer number (39780470709).

Almost surely, 2^212131121222 is an apocalyptic number.

212131121222 is a deficient number, since it is larger than the sum of its proper divisors (106112644450).

212131121222 is a wasteful number, since it uses less digits than its factorization.

212131121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15694614.

The product of its digits is 192, while the sum is 20.

Adding to 212131121222 its reverse (222121131212), we get a palindrome (434252252434).

The spelling of 212131121222 in words is "two hundred twelve billion, one hundred thirty-one million, one hundred twenty-one thousand, two hundred twenty-two".