201101001221010 has 128 divisors (see below), whose sum is σ = 537782391742464. Its totient is φ = 47709084706560.

The previous prime is 201101001220967. The next prime is 201101001221011. The reversal of 201101001221010 is 10122100101102.

It is a super-2 number, since 2×201101001221010² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201101001221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 137107884 + ... + 138566856.

It is an arithmetic number, because the mean of its divisors is an integer number (4201424935488).

Almost surely, 2^{201101001221010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 201101001221010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268891195871232).

201101001221010 is an abundant number, since it is smaller than the sum of its proper divisors (336681390521454).

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

201101001221010 is a wasteful number, since it uses less digits than its factorization.

201101001221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467928.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 201101001221010 its reverse (10122100101102), we get a palindrome (211223101322112).

The spelling of 201101001221010 in words is "two hundred one trillion, one hundred one billion, one million, two hundred twenty-one thousand, ten".