2111001012 has 36 divisors (see below), whose sum is σ = 5337923136. Its totient is φ = 703432080.

The previous prime is 2111001007. The next prime is 2111001041. The reversal of 2111001012 is 2101001112.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2111000985 and 2111001003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124933 + ... + 140819.

Almost surely, 2^2111001012 is an apocalyptic number.

It is an amenable number.

2111001012 is an abundant number, since it is smaller than the sum of its proper divisors (3226922124).

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

2111001012 is a wasteful number, since it uses less digits than its factorization.

2111001012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19588 (or 19583 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 2111001012 is about 45945.6310436585. The cubic root of 2111001012 is about 1282.8114091667.

Adding to 2111001012 its reverse (2101001112), we get a palindrome (4212002124).

The spelling of 2111001012 in words is "two billion, one hundred eleven million, one thousand, twelve".