101112111222220 has 96 divisors (see below), whose sum is σ = 245175733490688. Its totient is φ = 34309328239872.

The previous prime is 101112111222211. The next prime is 101112111222337. The reversal of 101112111222220 is 22222111211101.

It is a happy 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, 21306474 + ... + 25616206.

It is an arithmetic number, because the mean of its divisors is an integer number (2553913890528).

Almost surely, 2^{101112111222220} is an apocalyptic number.

101112111222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101112111222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122587866745344).

101112111222220 is an abundant number, since it is smaller than the sum of its proper divisors (144063622268468).

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

101112111222220 is a wasteful number, since it uses less digits than its factorization.

101112111222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4311479 (or 4311477 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 101112111222220 its reverse (22222111211101), we get a palindrome (123334222433321).

The spelling of 101112111222220 in words is "one hundred one trillion, one hundred twelve billion, one hundred eleven million, two hundred twenty-two thousand, two hundred twenty".