20110210221021 has 16 divisors (see below), whose sum is σ = 28391272545024. Its totient is φ = 12617998884864.

The previous prime is 20110210221019. The next prime is 20110210221037. The reversal of 20110210221021 is 12012201201102.

It is not a de Polignac number, because 20110210221021 - 2¹ = 20110210221019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110210221121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1134621 + ... + 6442653.

It is an arithmetic number, because the mean of its divisors is an integer number (1774454534064).

Almost surely, 2^{20110210221021} is an apocalyptic number.

It is an amenable number.

20110210221021 is a deficient number, since it is larger than the sum of its proper divisors (8281062324003).

20110210221021 is a wasteful number, since it uses less digits than its factorization.

20110210221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5382340.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20110210221021 its reverse (12012201201102), we get a palindrome (32122411422123).

The spelling of 20110210221021 in words is "twenty trillion, one hundred ten billion, two hundred ten million, two hundred twenty-one thousand, twenty-one".