2111201340 has 48 divisors (see below), whose sum is σ = 6222491520. Its totient is φ = 533355840.

The previous prime is 2111201333. The next prime is 2111201347. The reversal of 2111201340 is 431021112.

It is an interprime number because it is at equal distance from previous prime (2111201333) and next prime (2111201347).

It is a super-3 number, since 3×2111201340³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111201347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 924826 + ... + 927105.

It is an arithmetic number, because the mean of its divisors is an integer number (129635240).

Almost surely, 2^2111201340 is an apocalyptic number.

2111201340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111201340 is an abundant number, since it is smaller than the sum of its proper divisors (4111290180).

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

2111201340 is a wasteful number, since it uses less digits than its factorization.

2111201340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1851962 (or 1851960 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2111201340 is about 45947.8110468823. The cubic root of 2111201340 is about 1282.8519862695.

Adding to 2111201340 its reverse (431021112), we get a palindrome (2542222452).

The spelling of 2111201340 in words is "two billion, one hundred eleven million, two hundred one thousand, three hundred forty".