2120111012 has 6 divisors (see below), whose sum is σ = 3710194278. Its totient is φ = 1060055504.

The previous prime is 2120111011. The next prime is 2120111023. The reversal of 2120111012 is 2101110212.

It can be written as a sum of positive squares in only one way, i.e., 1840753216 + 279357796 = 42904^2 + 16714^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2120110984 and 2120111002.

It is not an unprimeable number, because it can be changed into a prime (2120111011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265013873 + ... + 265013880.

It is an arithmetic number, because the mean of its divisors is an integer number (618365713).

Almost surely, 2^2120111012 is an apocalyptic number.

It is an amenable number.

2120111012 is a deficient number, since it is larger than the sum of its proper divisors (1590083266).

2120111012 is a wasteful number, since it uses less digits than its factorization.

2120111012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530027757 (or 530027755 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 2120111012 is about 46044.6632303897. The cubic root of 2120111012 is about 1284.6540802031.

Adding to 2120111012 its reverse (2101110212), we get a palindrome (4221221224).

The spelling of 2120111012 in words is "two billion, one hundred twenty million, one hundred eleven thousand, twelve".