212121101322 has 32 divisors (see below), whose sum is σ = 507640244160. Its totient is φ = 65268030960.

The previous prime is 212121101267. The next prime is 212121101327. The reversal of 212121101322 is 223101121212.

212121101322 is a `hidden beast` number, since 21 + 212 + 110 + 1 + 322 = 666.

It is a super-3 number, since 3×212121101322³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212121101295 and 212121101304.

It is not an unprimeable number, because it can be changed into a prime (212121101327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151082704 + ... + 151084107.

It is an arithmetic number, because the mean of its divisors is an integer number (15863757630).

Almost surely, 2^212121101322 is an apocalyptic number.

212121101322 is an abundant number, since it is smaller than the sum of its proper divisors (295519142838).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212121101322 is a wasteful number, since it uses less digits than its factorization.

212121101322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302166835 (or 302166829 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212121101322 its reverse (223101121212), we get a palindrome (435222222534).

The spelling of 212121101322 in words is "two hundred twelve billion, one hundred twenty-one million, one hundred one thousand, three hundred twenty-two".