111201212020220 has 96 divisors (see below), whose sum is σ = 282211353317376. Its totient is φ = 35996345971200.

The previous prime is 111201212020187. The next prime is 111201212020247. The reversal of 111201212020220 is 22020212102111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312290342 + ... + 312646221.

It is an arithmetic number, because the mean of its divisors is an integer number (2939701597056).

Almost surely, 2^{111201212020220} is an apocalyptic number.

111201212020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111201212020220 is an abundant number, since it is smaller than the sum of its proper divisors (171010141297156).

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

111201212020220 is a wasteful number, since it uses less digits than its factorization.

111201212020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624936651 (or 624936649 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 111201212020220 its reverse (22020212102111), we get a palindrome (133221424122331).

The spelling of 111201212020220 in words is "one hundred eleven trillion, two hundred one billion, two hundred twelve million, twenty thousand, two hundred twenty".