2111221201 has 8 divisors (see below), whose sum is σ = 2143929600. Its totient is φ = 2078662560.

The previous prime is 2111221193. The next prime is 2111221207. The reversal of 2111221201 is 1021221112.

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

It is a cyclic number.

It is not a de Polignac number, because 2111221201 - 2³ = 2111221193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111221207) 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, 8860 + ... + 65581.

It is an arithmetic number, because the mean of its divisors is an integer number (267991200).

Almost surely, 2^2111221201 is an apocalyptic number.

It is an amenable number.

2111221201 is a deficient number, since it is larger than the sum of its proper divisors (32708399).

2111221201 is an equidigital number, since it uses as much as digits as its factorization.

2111221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74879.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2111221201 is about 45948.0271720125. The cubic root of 2111221201 is about 1282.8560090413.

Adding to 2111221201 its reverse (1021221112), we get a palindrome (3132442313).

The spelling of 2111221201 in words is "two billion, one hundred eleven million, two hundred twenty-one thousand, two hundred one".