111020120001221 has 8 divisors (see below), whose sum is σ = 112449673190400. Its totient is φ = 109591172692560.

The previous prime is 111020120001151. The next prime is 111020120001251. The reversal of 111020120001221 is 122100021020111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020120001221 is a prime.

It is a super-2 number, since 2×111020120001221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111020120001196 and 111020120001205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020120001251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151101290 + ... + 151834251.

It is an arithmetic number, because the mean of its divisors is an integer number (14056209148800).

Almost surely, 2^{111020120001221} is an apocalyptic number.

It is an amenable number.

111020120001221 is a deficient number, since it is larger than the sum of its proper divisors (1429553189179).

111020120001221 is an equidigital number, since it uses as much as digits as its factorization.

111020120001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302940259.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111020120001221 its reverse (122100021020111), we get a palindrome (233120141021332).

The spelling of 111020120001221 in words is "one hundred eleven trillion, twenty billion, one hundred twenty million, one thousand, two hundred twenty-one".