2003012220 has 72 divisors (see below), whose sum is σ = 6164664912. Its totient is φ = 485576960.

The previous prime is 2003012213. The next prime is 2003012257. The reversal of 2003012220 is 222103002.

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 = 2003012196 and 2003012205.

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, 130689 + ... + 145208.

It is an arithmetic number, because the mean of its divisors is an integer number (85620346).

Almost surely, 2^2003012220 is an apocalyptic number.

2003012220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2003012220 is an abundant number, since it is smaller than the sum of its proper divisors (4161652692).

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

2003012220 is a wasteful number, since it uses less digits than its factorization.

2003012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275931 (or 275918 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 2003012220 is about 44755.0245223930. The cubic root of 2003012220 is about 1260.5532591729.

Adding to 2003012220 its reverse (222103002), we get a palindrome (2225115222).

The spelling of 2003012220 in words is "two billion, three million, twelve thousand, two hundred twenty".