2111422440 has 192 divisors, whose sum is σ = 6803611200. Its totient is φ = 524050432.

The previous prime is 2111422399. The next prime is 2111422483. The reversal of 2111422440 is 442241112.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3710476 + ... + 3711044.

It is an arithmetic number, because the mean of its divisors is an integer number (35435475).

Almost surely, 2^2111422440 is an apocalyptic number.

2111422440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111422440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3401805600).

2111422440 is an abundant number, since it is smaller than the sum of its proper divisors (4692188760).

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

2111422440 is a wasteful number, since it uses less digits than its factorization.

2111422440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 2111422440 is about 45950.2169744605. The cubic root of 2111422440 is about 1282.8967678302.

Adding to 2111422440 its reverse (442241112), we get a palindrome (2553663552).

The spelling of 2111422440 in words is "two billion, one hundred eleven million, four hundred twenty-two thousand, four hundred forty".