2011122040 has 32 divisors (see below), whose sum is σ = 4630261680. Its totient is φ = 785740032.

The previous prime is 2011122023. The next prime is 2011122079. The reversal of 2011122040 is 402211102.

It is a happy number.

It is a super-2 number, since 2×2011122040² = 8089223719547523200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2011122040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582909 + ... + 586348.

Almost surely, 2^2011122040 is an apocalyptic number.

2011122040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011122040 is an abundant number, since it is smaller than the sum of its proper divisors (2619139640).

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

2011122040 is a wasteful number, since it uses less digits than its factorization.

2011122040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169311 (or 1169307 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2011122040 is about 44845.5353407672. The cubic root of 2011122040 is about 1262.2522160519.

Adding to 2011122040 its reverse (402211102), we get a palindrome (2413333142).

The spelling of 2011122040 in words is "two billion, eleven million, one hundred twenty-two thousand, forty".