1001021222120 has 32 divisors (see below), whose sum is σ = 2370839738400. Its totient is φ = 379334357568.

The previous prime is 1001021222099. The next prime is 1001021222129. The reversal of 1001021222120 is 212221201001.

It is a junction number, because it is equal to n+sod(n) for n = 1001021222095 and 1001021222104.

It is not an unprimeable number, because it can be changed into a prime (1001021222129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 658565834 + ... + 658567353.

It is an arithmetic number, because the mean of its divisors is an integer number (74088741825).

Almost surely, 2^{1001021222120} is an apocalyptic number.

1001021222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001021222120 is an abundant number, since it is smaller than the sum of its proper divisors (1369818516280).

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

1001021222120 is a wasteful number, since it uses less digits than its factorization.

1001021222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317133217 (or 1317133213 counting only the distinct ones).

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

Adding to 1001021222120 its reverse (212221201001), we get a palindrome (1213242423121).

The spelling of 1001021222120 in words is "one trillion, one billion, twenty-one million, two hundred twenty-two thousand, one hundred twenty".