2021011220010 has 128 divisors (see below), whose sum is σ = 4977985434624. Its totient is φ = 524917785600.

The previous prime is 2021011219921. The next prime is 2021011220017. The reversal of 2021011220010 is 100221101202.

It is not an unprimeable number, because it can be changed into a prime (2021011220017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 331255960 + ... + 331262060.

It is an arithmetic number, because the mean of its divisors is an integer number (38890511208).

Almost surely, 2^{2021011220010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021011220010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2488992717312).

2021011220010 is an abundant number, since it is smaller than the sum of its proper divisors (2956974214614).

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

2021011220010 is a wasteful number, since it uses less digits than its factorization.

2021011220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7648.

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

Adding to 2021011220010 its reverse (100221101202), we get a palindrome (2121232321212).

The spelling of 2021011220010 in words is "two trillion, twenty-one billion, eleven million, two hundred twenty thousand, ten".