1211012201 has 8 divisors (see below), whose sum is σ = 1387982400. Its totient is φ = 1035034128.

The previous prime is 1211012171. The next prime is 1211012207. The reversal of 1211012201 is 1022101121.

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 1211012201 - 2⁶ = 1211012137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1211012207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245411 + ... + 250296.

It is an arithmetic number, because the mean of its divisors is an integer number (173497800).

Almost surely, 2^1211012201 is an apocalyptic number.

It is an amenable number.

1211012201 is a deficient number, since it is larger than the sum of its proper divisors (176970199).

1211012201 is an equidigital number, since it uses as much as digits as its factorization.

1211012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496063.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1211012201 is about 34799.6005867883. The cubic root of 1211012201 is about 1065.8992899424.

Adding to 1211012201 its reverse (1022101121), we get a palindrome (2233113322).

The spelling of 1211012201 in words is "one billion, two hundred eleven million, twelve thousand, two hundred one".