1001220202220 has 48 divisors (see below), whose sum is σ = 2507403644928. Its totient is φ = 328350475200.

The previous prime is 1001220202163. The next prime is 1001220202259. The reversal of 1001220202220 is 222020221001.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1001220202195 and 1001220202204.

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, 155465756 + ... + 155472195.

It is an arithmetic number, because the mean of its divisors is an integer number (52237575936).

Almost surely, 2^{1001220202220} is an apocalyptic number.

1001220202220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001220202220 is an abundant number, since it is smaller than the sum of its proper divisors (1506183442708).

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

1001220202220 is a wasteful number, since it uses less digits than its factorization.

1001220202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310937990 (or 310937988 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1001220202220 its reverse (222020221001), we get a palindrome (1223240423221).

The spelling of 1001220202220 in words is "one trillion, one billion, two hundred twenty million, two hundred two thousand, two hundred twenty".