1101001001211 has 6 divisors (see below), whose sum is σ = 1590334779540. Its totient is φ = 734000667468.

The previous prime is 1101001001179. The next prime is 1101001001239. The reversal of 1101001001211 is 1121001001011.

It is not a de Polignac number, because 1101001001211 - 2⁵ = 1101001001179 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: 122333444579 = 1101001001211 / (1 + 1 + 0 + 1 + 0 + 0 + 1 + 0 + 0 + 1 + 2 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1101001001193 and 1101001001202.

It is not an unprimeable number, because it can be changed into a prime (1101001001251) 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, 61166722281 + ... + 61166722298.

It is an arithmetic number, because the mean of its divisors is an integer number (265055796590).

Almost surely, 2^{1101001001211} is an apocalyptic number.

1101001001211 is a deficient number, since it is larger than the sum of its proper divisors (489333778329).

1101001001211 is a wasteful number, since it uses less digits than its factorization.

1101001001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122333444585 (or 122333444582 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 1101001001211 its reverse (1121001001011), we get a palindrome (2222002002222).

The spelling of 1101001001211 in words is "one trillion, one hundred one billion, one million, one thousand, two hundred eleven".