10001201211 has 6 divisors (see below), whose sum is σ = 14446179540. Its totient is φ = 6667467468.

The previous prime is 10001201207. The next prime is 10001201233. The reversal of 10001201211 is 11210210001.

It is a happy number.

It is not a de Polignac number, because 10001201211 - 2² = 10001201207 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1111244579 = 10001201211 / (1 + 0 + 0 + 0 + 1 + 2 + 0 + 1 + 2 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 10001201193 and 10001201202.

It is not an unprimeable number, because it can be changed into a prime (10001201011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 555622281 + ... + 555622298.

It is an arithmetic number, because the mean of its divisors is an integer number (2407696590).

Almost surely, 2^10001201211 is an apocalyptic number.

10001201211 is a deficient number, since it is larger than the sum of its proper divisors (4444978329).

10001201211 is a wasteful number, since it uses less digits than its factorization.

10001201211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111244585 (or 1111244582 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10001201211 its reverse (11210210001), we get a palindrome (21211411212).

The spelling of 10001201211 in words is "ten billion, one million, two hundred one thousand, two hundred eleven".