2120001222 has 32 divisors (see below), whose sum is σ = 4356887040. Its totient is φ = 687324960.

The previous prime is 2120001197. The next prime is 2120001229. The reversal of 2120001222 is 2221000212.

It is a junction number, because it is equal to n+sod(n) for n = 2120001198 and 2120001207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120001229) 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, 44472 + ... + 78852.

It is an arithmetic number, because the mean of its divisors is an integer number (136152720).

Almost surely, 2^2120001222 is an apocalyptic number.

2120001222 is an abundant number, since it is smaller than the sum of its proper divisors (2236885818).

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

2120001222 is a wasteful number, since it uses less digits than its factorization.

2120001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34668.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2120001222 is about 46043.4710029555. The cubic root of 2120001222 is about 1284.6319045395.

Adding to 2120001222 its reverse (2221000212), we get a palindrome (4341001434).

The spelling of 2120001222 in words is "two billion, one hundred twenty million, one thousand, two hundred twenty-two".