211221727106041 has 4 divisors (see below), whose sum is σ = 211221767274084. Its totient is φ = 211221686938000.

The previous prime is 211221727105967. The next prime is 211221727106213. The reversal of 211221727106041 is 140601727122112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33468944005225 + 177752783100816 = 5785235^2 + 13332396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211221727106041 is a prime.

It is a super-2 number, since 2×211221727106041² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211221727106441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10750510 + ... + 23195191.

It is an arithmetic number, because the mean of its divisors is an integer number (52805441818521).

Almost surely, 2^{211221727106041} is an apocalyptic number.

It is an amenable number.

211221727106041 is a deficient number, since it is larger than the sum of its proper divisors (40168043).

211221727106041 is an equidigital number, since it uses as much as digits as its factorization.

211221727106041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40168042.

The product of its (nonzero) digits is 18816, while the sum is 37.

The spelling of 211221727106041 in words is "two hundred eleven trillion, two hundred twenty-one billion, seven hundred twenty-seven million, one hundred six thousand, forty-one".