1211112201 has 8 divisors (see below), whose sum is σ = 1739032960. Its totient is φ = 745299792.

The previous prime is 1211112163. The next prime is 1211112229. The reversal of 1211112201 is 1022111121.

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

It is not a de Polignac number, because 1211112201 - 2¹³ = 1211104009 is a prime.

It is a super-2 number, since 2×1211112201² = 2933585526822128802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211112251) 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, 15527041 + ... + 15527118.

It is an arithmetic number, because the mean of its divisors is an integer number (217379120).

Almost surely, 2^1211112201 is an apocalyptic number.

It is an amenable number.

1211112201 is a deficient number, since it is larger than the sum of its proper divisors (527920759).

1211112201 is a wasteful number, since it uses less digits than its factorization.

1211112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31054175.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1211112201 is about 34801.0373552284. The cubic root of 1211112201 is about 1065.9286282086.

Adding to 1211112201 its reverse (1022111121), we get a palindrome (2233223322).

The spelling of 1211112201 in words is "one billion, two hundred eleven million, one hundred twelve thousand, two hundred one".