1000120220220 has 96 divisors (see below), whose sum is σ = 3055070462976. Its totient is φ = 242440864000.

The previous prime is 1000120220201. The next prime is 1000120220233. The reversal of 1000120220220 is 220220210001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1000120220196 and 1000120220205.

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, 23155645 + ... + 23198795.

It is an arithmetic number, because the mean of its divisors is an integer number (31823650656).

Almost surely, 2^{1000120220220} is an apocalyptic number.

1000120220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000120220220 is an abundant number, since it is smaller than the sum of its proper divisors (2054950242756).

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

1000120220220 is a wasteful number, since it uses less digits than its factorization.

1000120220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78291 (or 78289 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 1000120220220 its reverse (220220210001), we get a palindrome (1220340430221).

The spelling of 1000120220220 in words is "one trillion, one hundred twenty million, two hundred twenty thousand, two hundred twenty".