211221010122441 has 16 divisors (see below), whose sum is σ = 307242926266368. Its totient is φ = 128007580870800.

The previous prime is 211221010122263. The next prime is 211221010122461. The reversal of 211221010122441 is 144221010122112.

It is not a de Polignac number, because 211221010122441 - 2⁹ = 211221010121929 is a prime.

It is a super-2 number, since 2×211221010122441² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211221010122461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 127981045 + ... + 129620946.

It is an arithmetic number, because the mean of its divisors is an integer number (19202682891648).

Almost surely, 2^{211221010122441} is an apocalyptic number.

It is an amenable number.

211221010122441 is a deficient number, since it is larger than the sum of its proper divisors (96021916143927).

211221010122441 is a wasteful number, since it uses less digits than its factorization.

211221010122441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257626852.

The product of its (nonzero) digits is 512, while the sum is 24.

Adding to 211221010122441 its reverse (144221010122112), we get a palindrome (355442020244553).

The spelling of 211221010122441 in words is "two hundred eleven trillion, two hundred twenty-one billion, ten million, one hundred twenty-two thousand, four hundred forty-one".