212551021183 has 2 divisors, whose sum is σ = 212551021184. Its totient is φ = 212551021182.

The previous prime is 212551021117. The next prime is 212551021187. The reversal of 212551021183 is 381120155212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212551021183 - 2³³ = 203961086591 is a prime.

It is a super-2 number, since 2×212551021183² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212551021187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106275510591 + 106275510592.

It is an arithmetic number, because the mean of its divisors is an integer number (106275510592).

Almost surely, 2^212551021183 is an apocalyptic number.

212551021183 is a deficient number, since it is larger than the sum of its proper divisors (1).

212551021183 is an equidigital number, since it uses as much as digits as its factorization.

212551021183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4800, while the sum is 31.

Adding to 212551021183 its reverse (381120155212), we get a palindrome (593671176395).

The spelling of 212551021183 in words is "two hundred twelve billion, five hundred fifty-one million, twenty-one thousand, one hundred eighty-three".