111221000000211 has 8 divisors (see below), whose sum is σ = 153408275862480. Its totient is φ = 71590528735712.

The previous prime is 111221000000207. The next prime is 111221000000273. The reversal of 111221000000211 is 112000000122111.

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 111221000000211 - 2² = 111221000000207 is a prime.

It is a super-2 number, since 2×111221000000211² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (111221000000611) 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, 639201149340 + ... + 639201149513.

It is an arithmetic number, because the mean of its divisors is an integer number (19176034482810).

Almost surely, 2^{111221000000211} is an apocalyptic number.

111221000000211 is a deficient number, since it is larger than the sum of its proper divisors (42187275862269).

111221000000211 is a wasteful number, since it uses less digits than its factorization.

111221000000211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278402298885.

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

Adding to 111221000000211 its reverse (112000000122111), we get a palindrome (223221000122322).

The spelling of 111221000000211 in words is "one hundred eleven trillion, two hundred twenty-one billion, two hundred eleven", and thus it is an aban number.