1001210212220 has 48 divisors (see below), whose sum is σ = 2183680708608. Its totient is φ = 385187503680.

The previous prime is 1001210212207. The next prime is 1001210212237. The reversal of 1001210212220 is 222120121001.

It is a junction number, because it is equal to n+sod(n) for n = 1001210212195 and 1001210212204.

It is a congruent number.

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, 4852484 + ... + 5054603.

It is an arithmetic number, because the mean of its divisors is an integer number (45493348096).

Almost surely, 2^{1001210212220} is an apocalyptic number.

1001210212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001210212220 is an abundant number, since it is smaller than the sum of its proper divisors (1182470496388).

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

1001210212220 is a wasteful number, since it uses less digits than its factorization.

1001210212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9907290 (or 9907288 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1001210212220 its reverse (222120121001), we get a palindrome (1223330333221).

The spelling of 1001210212220 in words is "one trillion, one billion, two hundred ten million, two hundred twelve thousand, two hundred twenty".