1001221202202 has 64 divisors (see below), whose sum is σ = 2210119382016. Its totient is φ = 300411901440.

The previous prime is 1001221202171. The next prime is 1001221202207. The reversal of 1001221202202 is 2022021221001.

1001221202202 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (1001221202207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6780268 + ... + 6926360.

It is an arithmetic number, because the mean of its divisors is an integer number (34533115344).

Almost surely, 2^{1001221202202} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001221202202, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1105059691008).

1001221202202 is an abundant number, since it is smaller than the sum of its proper divisors (1208898179814).

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

1001221202202 is a wasteful number, since it uses less digits than its factorization.

1001221202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148295.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1001221202202 its reverse (2022021221001), we get a palindrome (3023242423203).

The spelling of 1001221202202 in words is "one trillion, one billion, two hundred twenty-one million, two hundred two thousand, two hundred two".