2221002031020 has 48 divisors (see below), whose sum is σ = 6218898402528. Its totient is φ = 592258378240.

The previous prime is 2221002030991. The next prime is 2221002031033. The reversal of 2221002031020 is 201302001222.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4451350 + ... + 4925090.

It is an arithmetic number, because the mean of its divisors is an integer number (129560383386).

Almost surely, 2^{2221002031020} is an apocalyptic number.

2221002031020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221002031020 is an abundant number, since it is smaller than the sum of its proper divisors (3997896371508).

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

2221002031020 is a wasteful number, since it uses less digits than its factorization.

2221002031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551890 (or 551888 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 2221002031020 its reverse (201302001222), we get a palindrome (2422304032242).

The spelling of 2221002031020 in words is "two trillion, two hundred twenty-one billion, two million, thirty-one thousand, twenty".