11212112001 has 4 divisors (see below), whose sum is σ = 14949482672. Its totient is φ = 7474741332.

The previous prime is 11212111973. The next prime is 11212112063. The reversal of 11212112001 is 10021121211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 11212112001 - 2⁷ = 11212111873 is a prime.

It is a super-2 number, since 2×11212112001² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11212112081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868685331 + ... + 1868685336.

It is an arithmetic number, because the mean of its divisors is an integer number (3737370668).

Almost surely, 2^11212112001 is an apocalyptic number.

It is an amenable number.

11212112001 is a deficient number, since it is larger than the sum of its proper divisors (3737370671).

11212112001 is an equidigital number, since it uses as much as digits as its factorization.

11212112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3737370670.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11212112001 its reverse (10021121211), we get a palindrome (21233233212).

The spelling of 11212112001 in words is "eleven billion, two hundred twelve million, one hundred twelve thousand, one".