211211134040 has 32 divisors (see below), whose sum is σ = 479430593280. Its totient is φ = 83736801792.

The previous prime is 211211134031. The next prime is 211211134051. The reversal of 211211134040 is 40431112112.

It is a super-2 number, since 2×211211134040² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 23359544 + ... + 23368583.

It is an arithmetic number, because the mean of its divisors is an integer number (14982206040).

Almost surely, 2^211211134040 is an apocalyptic number.

211211134040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211211134040 is an abundant number, since it is smaller than the sum of its proper divisors (268219459240).

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

211211134040 is a wasteful number, since it uses less digits than its factorization.

211211134040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46728251 (or 46728247 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 211211134040 its reverse (40431112112), we get a palindrome (251642246152).

The spelling of 211211134040 in words is "two hundred eleven billion, two hundred eleven million, one hundred thirty-four thousand, forty".