111211010010220 has 12 divisors (see below), whose sum is σ = 233543121021504. Its totient is φ = 44484404004080.

The previous prime is 111211010010181. The next prime is 111211010010277. The reversal of 111211010010220 is 22010010112111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111211010010220.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2780275250236 + ... + 2780275250275.

It is an arithmetic number, because the mean of its divisors is an integer number (19461926751792).

Almost surely, 2^{111211010010220} is an apocalyptic number.

111211010010220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111211010010220 is an abundant number, since it is smaller than the sum of its proper divisors (122332111011284).

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

111211010010220 is a wasteful number, since it uses less digits than its factorization.

111211010010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5560550500520 (or 5560550500518 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111211010010220 its reverse (22010010112111), we get a palindrome (133221020122331).

The spelling of 111211010010220 in words is "one hundred eleven trillion, two hundred eleven billion, ten million, ten thousand, two hundred twenty".