2121101022 has 32 divisors (see below), whose sum is σ = 4374373248. Its totient is φ = 685327136.

The previous prime is 2121100997. The next prime is 2121101029. The reversal of 2121101022 is 2201011212.

It is a junction number, because it is equal to n+sod(n) for n = 2121100989 and 2121101007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121101029) 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, 13788 + ... + 66575.

It is an arithmetic number, because the mean of its divisors is an integer number (136699164).

Almost surely, 2^2121101022 is an apocalyptic number.

2121101022 is an abundant number, since it is smaller than the sum of its proper divisors (2253272226).

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

2121101022 is a wasteful number, since it uses less digits than its factorization.

2121101022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80504.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2121101022 is about 46055.4125157945. The cubic root of 2121101022 is about 1284.8540103744.

Adding to 2121101022 its reverse (2201011212), we get a palindrome (4322112234).

The spelling of 2121101022 in words is "two billion, one hundred twenty-one million, one hundred one thousand, twenty-two".