12010221111 has 16 divisors (see below), whose sum is σ = 18302828544. Its totient is φ = 6862406304.

The previous prime is 12010221079. The next prime is 12010221151. The reversal of 12010221111 is 11112201021.

It is not a de Polignac number, because 12010221111 - 2⁵ = 12010221079 is a prime.

It is a super-4 number, since 4×12010221111⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010221151) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 438265 + ... + 464861.

It is an arithmetic number, because the mean of its divisors is an integer number (1143926784).

Almost surely, 2^12010221111 is an apocalyptic number.

12010221111 is a deficient number, since it is larger than the sum of its proper divisors (6292607433).

12010221111 is a wasteful number, since it uses less digits than its factorization.

12010221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48110.

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

Adding to 12010221111 its reverse (11112201021), we get a palindrome (23122422132).

The spelling of 12010221111 in words is "twelve billion, ten million, two hundred twenty-one thousand, one hundred eleven".