1641212211 has 8 divisors (see below), whose sum is σ = 2188632784. Its totient is φ = 1093966560.

The previous prime is 1641212201. The next prime is 1641212213. The reversal of 1641212211 is 1122121461.

1641212211 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1641212211 - 2¹⁷ = 1641081139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1641212213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19996 + ... + 60681.

It is an arithmetic number, because the mean of its divisors is an integer number (273579098).

Almost surely, 2^1641212211 is an apocalyptic number.

1641212211 is a deficient number, since it is larger than the sum of its proper divisors (547420573).

1641212211 is an equidigital number, since it uses as much as digits as its factorization.

1641212211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87461.

The product of its digits is 192, while the sum is 21.

The square root of 1641212211 is about 40511.8774065088. The cubic root of 1641212211 is about 1179.5641910209.

Adding to 1641212211 its reverse (1122121461), we get a palindrome (2763333672).

The spelling of 1641212211 in words is "one billion, six hundred forty-one million, two hundred twelve thousand, two hundred eleven".