111221012000220 has 48 divisors (see below), whose sum is σ = 311424707172768. Its totient is φ = 29658377145600.

The previous prime is 111221012000213. The next prime is 111221012000233. The reversal of 111221012000220 is 22000210122111.

It is a super-2 number, since 2×111221012000220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111221012000220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14268259 + ... + 20640378.

It is an arithmetic number, because the mean of its divisors is an integer number (6488014732766).

Almost surely, 2^{111221012000220} is an apocalyptic number.

111221012000220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111221012000220 is an abundant number, since it is smaller than the sum of its proper divisors (200203695172548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111221012000220 is a wasteful number, since it uses less digits than its factorization.

111221012000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34961750 (or 34961748 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111221012000220 its reverse (22000210122111), we get a palindrome (133221222122331).

The spelling of 111221012000220 in words is "one hundred eleven trillion, two hundred twenty-one billion, twelve million, two hundred twenty", and thus it is an aban number.