211321234312251 has 8 divisors (see below), whose sum is σ = 322013309428224. Its totient is φ = 120754991035560.

The previous prime is 211321234312231. The next prime is 211321234312277. The reversal of 211321234312251 is 152213432123112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211321234312251 - 2²⁶ = 211321167203387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211321234312231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5031457959795 + ... + 5031457959836.

It is an arithmetic number, because the mean of its divisors is an integer number (40251663678528).

Almost surely, 2^{211321234312251} is an apocalyptic number.

211321234312251 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

211321234312251 is a deficient number, since it is larger than the sum of its proper divisors (110692075115973).

211321234312251 is a wasteful number, since it uses less digits than its factorization.

211321234312251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10062915919641.

The product of its digits is 17280, while the sum is 33.

Adding to 211321234312251 its reverse (152213432123112), we get a palindrome (363534666435363).

The spelling of 211321234312251 in words is "two hundred eleven trillion, three hundred twenty-one billion, two hundred thirty-four million, three hundred twelve thousand, two hundred fifty-one".