211423051135 has 4 divisors (see below), whose sum is σ = 253707661368. Its totient is φ = 169138440904.

The previous prime is 211423051121. The next prime is 211423051153. The reversal of 211423051135 is 531150324112.

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 211423051135 - 2⁹ = 211423050623 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21142305109 + ... + 21142305118.

It is an arithmetic number, because the mean of its divisors is an integer number (63426915342).

Almost surely, 2^211423051135 is an apocalyptic number.

211423051135 is a deficient number, since it is larger than the sum of its proper divisors (42284610233).

211423051135 is an equidigital number, since it uses as much as digits as its factorization.

211423051135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42284610232.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 211423051135 its reverse (531150324112), we get a palindrome (742573375247).

The spelling of 211423051135 in words is "two hundred eleven billion, four hundred twenty-three million, fifty-one thousand, one hundred thirty-five".