2120111222022 has 96 divisors (see below), whose sum is σ = 4778049276000. Its totient is φ = 678600405504.

The previous prime is 2120111221981. The next prime is 2120111222029. The reversal of 2120111222022 is 2202221110212.

It is a happy number.

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 = 2120111221986 and 2120111222004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120111222029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73221604 + ... + 73250552.

It is an arithmetic number, because the mean of its divisors is an integer number (49771346625).

Almost surely, 2^{2120111222022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2120111222022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2389024638000).

2120111222022 is an abundant number, since it is smaller than the sum of its proper divisors (2657938053978).

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

2120111222022 is a wasteful number, since it uses less digits than its factorization.

2120111222022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29750 (or 29747 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2120111222022 its reverse (2202221110212), we get a palindrome (4322332332234).

The spelling of 2120111222022 in words is "two trillion, one hundred twenty billion, one hundred eleven million, two hundred twenty-two thousand, twenty-two".