1012223140220 has 48 divisors (see below), whose sum is σ = 2252162102400. Its totient is φ = 380826031104.

The previous prime is 1012223140217. The next prime is 1012223140241. The reversal of 1012223140220 is 220413222101.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1012223140192 and 1012223140201.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 434324 + ... + 1487643.

It is an arithmetic number, because the mean of its divisors is an integer number (46920043800).

Almost surely, 2^{1012223140220} is an apocalyptic number.

1012223140220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012223140220 is an abundant number, since it is smaller than the sum of its proper divisors (1239938962180).

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

1012223140220 is a wasteful number, since it uses less digits than its factorization.

1012223140220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1923542 (or 1923540 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 1012223140220 its reverse (220413222101), we get a palindrome (1232636362321).

The spelling of 1012223140220 in words is "one trillion, twelve billion, two hundred twenty-three million, one hundred forty thousand, two hundred twenty".