1012020002220 has 96 divisors (see below), whose sum is σ = 2860604006400. Its totient is φ = 267315782400.

The previous prime is 1012020002129. The next prime is 1012020002237. The reversal of 1012020002220 is 222000202101.

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 = 1012020002196 and 1012020002205.

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 31 ways as a sum of consecutive naturals, for example, 3001909 + ... + 3321971.

It is an arithmetic number, because the mean of its divisors is an integer number (29797958400).

Almost surely, 2^{1012020002220} is an apocalyptic number.

1012020002220 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 1012020002220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1430302003200).

1012020002220 is an abundant number, since it is smaller than the sum of its proper divisors (1848584004180).

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

1012020002220 is a wasteful number, since it uses less digits than its factorization.

1012020002220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320575 (or 320573 counting only the distinct ones).

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

Adding to 1012020002220 its reverse (222000202101), we get a palindrome (1234020204321).

The spelling of 1012020002220 in words is "one trillion, twelve billion, twenty million, two thousand, two hundred twenty".