211320121333031 has 4 divisors (see below), whose sum is σ = 211320323986200. Its totient is φ = 211319918679864.

The previous prime is 211320121332949. The next prime is 211320121333049. The reversal of 211320121333031 is 130333121023112.

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 211320121333031 - 2³⁰ = 211319047591207 is a prime.

It is a super-2 number, since 2×211320121333031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211320121332031) 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 3 ways as a sum of consecutive naturals, for example, 99754301 + ... + 101850678.

It is an arithmetic number, because the mean of its divisors is an integer number (52830080996550).

Almost surely, 2^{211320121333031} is an apocalyptic number.

211320121333031 is a deficient number, since it is larger than the sum of its proper divisors (202653169).

211320121333031 is a wasteful number, since it uses less digits than its factorization.

211320121333031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202653168.

The product of its (nonzero) digits is 1944, while the sum is 26.

Adding to 211320121333031 its reverse (130333121023112), we get a palindrome (341653242356143).

The spelling of 211320121333031 in words is "two hundred eleven trillion, three hundred twenty billion, one hundred twenty-one million, three hundred thirty-three thousand, thirty-one".