1001212102220 has 48 divisors (see below), whose sum is σ = 2311746490368. Its totient is φ = 361210368960.

The previous prime is 1001212102207. The next prime is 1001212102223. The reversal of 1001212102220 is 222012121001.

It is a junction number, because it is equal to n+sod(n) for n = 1001212102195 and 1001212102204.

It is not an unprimeable number, because it can be changed into a prime (1001212102223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17889242 + ... + 17945121.

It is an arithmetic number, because the mean of its divisors is an integer number (48161385216).

Almost surely, 2^{1001212102220} is an apocalyptic number.

1001212102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001212102220 is an abundant number, since it is smaller than the sum of its proper divisors (1310534388148).

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

1001212102220 is a wasteful number, since it uses less digits than its factorization.

1001212102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35834510 (or 35834508 counting only the distinct ones).

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

Adding to 1001212102220 its reverse (222012121001), we get a palindrome (1223224223221).

The spelling of 1001212102220 in words is "one trillion, one billion, two hundred twelve million, one hundred two thousand, two hundred twenty".