1001221202010 has 64 divisors (see below), whose sum is σ = 2439951465600. Its totient is φ = 262882701312.

The previous prime is 1001221201987. The next prime is 1001221202011. The reversal of 1001221202010 is 102021221001.

1001221202010 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 (1001221202011) 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, 4162306 + ... + 4396274.

It is an arithmetic number, because the mean of its divisors is an integer number (38124241650).

Almost surely, 2^{1001221202010} is an apocalyptic number.

1001221202010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001221202010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1219975732800).

1001221202010 is an abundant number, since it is smaller than the sum of its proper divisors (1438730263590).

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

1001221202010 is a wasteful number, since it uses less digits than its factorization.

1001221202010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236175.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1001221202010 its reverse (102021221001), we get a palindrome (1103242423011).

The spelling of 1001221202010 in words is "one trillion, one billion, two hundred twenty-one million, two hundred two thousand, ten".