211023444461 has 2 divisors, whose sum is σ = 211023444462. Its totient is φ = 211023444460.

The previous prime is 211023444407. The next prime is 211023444473. The reversal of 211023444461 is 164444320112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179865899236 + 31157545225 = 424106^2 + 176515^2 .

It is a cyclic number.

It is not a de Polignac number, because 211023444461 - 2²² = 211019250157 is a prime.

It is a super-2 number, since 2×211023444461² (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 (211023444161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105511722230 + 105511722231.

It is an arithmetic number, because the mean of its divisors is an integer number (105511722231).

Almost surely, 2^211023444461 is an apocalyptic number.

It is an amenable number.

211023444461 is a deficient number, since it is larger than the sum of its proper divisors (1).

211023444461 is an equidigital number, since it uses as much as digits as its factorization.

211023444461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 211023444461 its reverse (164444320112), we get a palindrome (375467764573).

The spelling of 211023444461 in words is "two hundred eleven billion, twenty-three million, four hundred forty-four thousand, four hundred sixty-one".