111021222221201 has 4 divisors (see below), whose sum is σ = 114602551970304. Its totient is φ = 107439892472100.

The previous prime is 111021222221197. The next prime is 111021222221291. The reversal of 111021222221201 is 102122222120111.

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 a cyclic number.

It is not a de Polignac number, because 111021222221201 - 2² = 111021222221197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111021222221291) 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, 1790664874505 + ... + 1790664874566.

It is an arithmetic number, because the mean of its divisors is an integer number (28650637992576).

Almost surely, 2^{111021222221201} is an apocalyptic number.

It is an amenable number.

111021222221201 is a deficient number, since it is larger than the sum of its proper divisors (3581329749103).

111021222221201 is an equidigital number, since it uses as much as digits as its factorization.

111021222221201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3581329749102.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 111021222221201 its reverse (102122222120111), we get a palindrome (213143444341312).

It can be divided in two parts, 11 and 1021222221201, that multiplied together give a palindrome (11233444433211).

The spelling of 111021222221201 in words is "one hundred eleven trillion, twenty-one billion, two hundred twenty-two million, two hundred twenty-one thousand, two hundred one".