111002211101221 has 8 divisors (see below), whose sum is σ = 121112612868384. Its totient is φ = 100895024611920.

The previous prime is 111002211101219. The next prime is 111002211101269. The reversal of 111002211101221 is 122101112200111.

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

It is not a de Polignac number, because 111002211101221 - 2¹ = 111002211101219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111002211101195 and 111002211101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002211101281) 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, 803747275 + ... + 803885368.

It is an arithmetic number, because the mean of its divisors is an integer number (15139076608548).

Almost surely, 2^{111002211101221} is an apocalyptic number.

111002211101221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111002211101221 is a deficient number, since it is larger than the sum of its proper divisors (10110401767163).

111002211101221 is a wasteful number, since it uses less digits than its factorization.

111002211101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1607638931.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 111002211101221 its reverse (122101112200111), we get a palindrome (233103323301332).

The spelling of 111002211101221 in words is "one hundred eleven trillion, two billion, two hundred eleven million, one hundred one thousand, two hundred twenty-one".