2120002121122 has 16 divisors (see below), whose sum is σ = 3289916201400. Its totient is φ = 1023369114880.

The previous prime is 2120002121117. The next prime is 2120002121129. The reversal of 2120002121122 is 2211212000212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1309928319441 + 810073801681 = 1144521^2 + 900041^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120002121096 and 2120002121105.

It is not an unprimeable number, because it can be changed into a prime (2120002121129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681847 + ... + 2169082.

Almost surely, 2^{2120002121122} is an apocalyptic number.

2120002121122 is a deficient number, since it is larger than the sum of its proper divisors (1169914080278).

2120002121122 is a wasteful number, since it uses less digits than its factorization.

2120002121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863781.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2120002121122 its reverse (2211212000212), we get a palindrome (4331214121334).

The spelling of 2120002121122 in words is "two trillion, one hundred twenty billion, two million, one hundred twenty-one thousand, one hundred twenty-two".