2220000323220 has 72 divisors (see below), whose sum is σ = 6800674313160. Its totient is φ = 586138694400.

The previous prime is 2220000323143. The next prime is 2220000323251. The reversal of 2220000323220 is 223230000222.

It can be written as a sum of positive squares in 4 ways, for example, as 553205713284 + 1666794609936 = 743778^2 + 1291044^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2220000323193 and 2220000323202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61037935 + ... + 61074294.

It is an arithmetic number, because the mean of its divisors is an integer number (94453809905).

Almost surely, 2^{2220000323220} is an apocalyptic number.

2220000323220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220000323220 is an abundant number, since it is smaller than the sum of its proper divisors (4580673989940).

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

2220000323220 is a wasteful number, since it uses less digits than its factorization.

2220000323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122112345 (or 122112340 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 2220000323220 its reverse (223230000222), we get a palindrome (2443230323442).

The spelling of 2220000323220 in words is "two trillion, two hundred twenty billion, three hundred twenty-three thousand, two hundred twenty".