2121211211022 has 32 divisors (see below), whose sum is σ = 4814096371200. Its totient is φ = 692026351704.

The previous prime is 2121211210991. The next prime is 2121211211027. The reversal of 2121211211022 is 2201121121212.

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 = 2121211210986 and 2121211211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121211211027) 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, 417887772 + ... + 417892847.

It is an arithmetic number, because the mean of its divisors is an integer number (150440511600).

Almost surely, 2^{2121211211022} is an apocalyptic number.

2121211211022 is an abundant number, since it is smaller than the sum of its proper divisors (2692885160178).

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

2121211211022 is a wasteful number, since it uses less digits than its factorization.

2121211211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835780677 (or 835780671 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2121211211022 its reverse (2201121121212), we get a palindrome (4322332332234).

The spelling of 2121211211022 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, two hundred eleven thousand, twenty-two".