211011220140 has 96 divisors (see below), whose sum is σ = 675522699264. Its totient is φ = 48210650880.

The previous prime is 211011220139. The next prime is 211011220141. The reversal of 211011220140 is 41022110112.

211011220140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (211011220139) and next prime (211011220141).

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

It is not an unprimeable number, because it can be changed into a prime (211011220141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 894517 + ... + 1105523.

It is an arithmetic number, because the mean of its divisors is an integer number (7036694784).

Almost surely, 2^211011220140 is an apocalyptic number.

211011220140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211011220140 is an abundant number, since it is smaller than the sum of its proper divisors (464511479124).

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

211011220140 is a wasteful number, since it uses less digits than its factorization.

211011220140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213407 (or 213405 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211011220140 its reverse (41022110112), we get a palindrome (252033330252).

The spelling of 211011220140 in words is "two hundred eleven billion, eleven million, two hundred twenty thousand, one hundred forty".