1012123233220 has 36 divisors (see below), whose sum is σ = 2336248096812. Its totient is φ = 368044811200.

The previous prime is 1012123233167. The next prime is 1012123233269. The reversal of 1012123233220 is 223323212101.

It can be written as a sum of positive squares in 2 ways, for example, as 286079498496 + 726043734724 = 534864^2 + 852082^2 .

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1012123233191 and 1012123233200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209113951 + ... + 209118790.

It is an arithmetic number, because the mean of its divisors is an integer number (64895780467).

Almost surely, 2^{1012123233220} is an apocalyptic number.

1012123233220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012123233220 is an abundant number, since it is smaller than the sum of its proper divisors (1324124863592).

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

1012123233220 is a wasteful number, since it uses less digits than its factorization.

1012123233220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418232772 (or 418232759 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1012123233220 its reverse (223323212101), we get a palindrome (1235446445321).

The spelling of 1012123233220 in words is "one trillion, twelve billion, one hundred twenty-three million, two hundred thirty-three thousand, two hundred twenty".