210111221000677 has 2 divisors, whose sum is σ = 210111221000678. Its totient is φ = 210111221000676.

The previous prime is 210111221000663. The next prime is 210111221000699. The reversal of 210111221000677 is 776000122111012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207445083926116 + 2666137074561 = 14402954^2 + 1632831^2 .

It is a cyclic number.

It is not a de Polignac number, because 210111221000677 - 2²³ = 210111212612069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210111221000077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105055610500338 + 105055610500339.

It is an arithmetic number, because the mean of its divisors is an integer number (105055610500339).

Almost surely, 2^{210111221000677} is an apocalyptic number.

It is an amenable number.

210111221000677 is a deficient number, since it is larger than the sum of its proper divisors (1).

210111221000677 is an equidigital number, since it uses as much as digits as its factorization.

210111221000677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 31.

Adding to 210111221000677 its reverse (776000122111012), we get a palindrome (986111343111689).

The spelling of 210111221000677 in words is "two hundred ten trillion, one hundred eleven billion, two hundred twenty-one million, six hundred seventy-seven", and thus it is an aban number.