2211121201 has 8 divisors (see below), whose sum is σ = 2342161224. Its totient is φ = 2080189440.

The previous prime is 2211121177. The next prime is 2211121217. The reversal of 2211121201 is 1021211122.

It can be written as a sum of positive squares in 4 ways, for example, as 544522225 + 1666598976 = 23335^2 + 40824^2 .

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 2211121201 - 2¹⁵ = 2211088433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211121271) 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, 17061 + ... + 68653.

It is an arithmetic number, because the mean of its divisors is an integer number (292770153).

Almost surely, 2^2211121201 is an apocalyptic number.

It is an amenable number.

2211121201 is a deficient number, since it is larger than the sum of its proper divisors (131040023).

2211121201 is a wasteful number, since it uses less digits than its factorization.

2211121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54131.

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

The square root of 2211121201 is about 47022.5605534195. The cubic root of 2211121201 is about 1302.7793005790.

Adding to 2211121201 its reverse (1021211122), we get a palindrome (3232332323).

The spelling of 2211121201 in words is "two billion, two hundred eleven million, one hundred twenty-one thousand, two hundred one".