211023132212621 has 2 divisors, whose sum is σ = 211023132212622. Its totient is φ = 211023132212620.

The previous prime is 211023132212537. The next prime is 211023132212639. The reversal of 211023132212621 is 126212231320112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161479285502500 + 49543846710121 = 12707450^2 + 7038739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211023132212621 is a prime.

It is a super-3 number, since 3×211023132212621³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211023132218621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105511566106310 + 105511566106311.

It is an arithmetic number, because the mean of its divisors is an integer number (105511566106311).

Almost surely, 2^{211023132212621} is an apocalyptic number.

It is an amenable number.

211023132212621 is a deficient number, since it is larger than the sum of its proper divisors (1).

211023132212621 is an equidigital number, since it uses as much as digits as its factorization.

211023132212621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

Adding to 211023132212621 its reverse (126212231320112), we get a palindrome (337235363532733).

The spelling of 211023132212621 in words is "two hundred eleven trillion, twenty-three billion, one hundred thirty-two million, two hundred twelve thousand, six hundred twenty-one".