11011211210001 has 32 divisors (see below), whose sum is σ = 15293618380800. Its totient is φ = 7040506253760.

The previous prime is 11011211209979. The next prime is 11011211210011. The reversal of 11011211210001 is 10001211211011.

It is not a de Polignac number, because 11011211210001 - 2²⁹ = 11010674339089 is a prime.

It is a super-2 number, since 2×11011211210001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11011211210011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43368660 + ... + 43621818.

It is an arithmetic number, because the mean of its divisors is an integer number (477925574400).

Almost surely, 2^{11011211210001} is an apocalyptic number.

It is an amenable number.

11011211210001 is a deficient number, since it is larger than the sum of its proper divisors (4282407170799).

11011211210001 is a wasteful number, since it uses less digits than its factorization.

11011211210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258789.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11011211210001 its reverse (10001211211011), we get a palindrome (21012422421012).

The spelling of 11011211210001 in words is "eleven trillion, eleven billion, two hundred eleven million, two hundred ten thousand, one".