11211212230001 has 32 divisors (see below), whose sum is σ = 14320991496960. Its totient is φ = 8544047947776.

The previous prime is 11211212229991. The next prime is 11211212230003. The reversal of 11211212230001 is 10003221211211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11211212230001 - 2³⁴ = 11194032360817 is a prime.

It is a super-2 number, since 2×11211212230001² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11211212230003) 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, 6225266 + ... + 7821531.

It is an arithmetic number, because the mean of its divisors is an integer number (447530984280).

Almost surely, 2^{11211212230001} is an apocalyptic number.

It is an amenable number.

11211212230001 is a deficient number, since it is larger than the sum of its proper divisors (3109779266959).

11211212230001 is a wasteful number, since it uses less digits than its factorization.

11211212230001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14047193.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11211212230001 its reverse (10003221211211), we get a palindrome (21214433441212).

The spelling of 11211212230001 in words is "eleven trillion, two hundred eleven billion, two hundred twelve million, two hundred thirty thousand, one".