211131120399 has 4 divisors (see below), whose sum is σ = 281508160536. Its totient is φ = 140754080264.

The previous prime is 211131120383. The next prime is 211131120439. The reversal of 211131120399 is 993021131112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211131120399 - 2⁴ = 211131120383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211131120899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35188520064 + ... + 35188520069.

It is an arithmetic number, because the mean of its divisors is an integer number (70377040134).

Almost surely, 2^211131120399 is an apocalyptic number.

211131120399 is a deficient number, since it is larger than the sum of its proper divisors (70377040137).

211131120399 is an equidigital number, since it uses as much as digits as its factorization.

211131120399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70377040136.

The product of its (nonzero) digits is 2916, while the sum is 33.

The spelling of 211131120399 in words is "two hundred eleven billion, one hundred thirty-one million, one hundred twenty thousand, three hundred ninety-nine".