12001000221111 has 8 divisors (see below), whose sum is σ = 17456000321664. Its totient is φ = 7273333467320.

The previous prime is 12001000221101. The next prime is 12001000221151. The reversal of 12001000221111 is 11112200010021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12001000221111 - 2²³ = 12000991832503 is a prime.

It is a super-4 number, since 4×12001000221111⁴ (a number of 53 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001000221101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181833336651 + ... + 181833336716.

It is an arithmetic number, because the mean of its divisors is an integer number (2182000040208).

Almost surely, 2^{12001000221111} is an apocalyptic number.

12001000221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12001000221111 is a deficient number, since it is larger than the sum of its proper divisors (5455000100553).

12001000221111 is a wasteful number, since it uses less digits than its factorization.

12001000221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363666673381.

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

Adding to 12001000221111 its reverse (11112200010021), we get a palindrome (23113200231132).

The spelling of 12001000221111 in words is "twelve trillion, one billion, two hundred twenty-one thousand, one hundred eleven".