21021202011022 has 32 divisors (see below), whose sum is σ = 33604071184512. Its totient is φ = 9827982226944.

The previous prime is 21021202010993. The next prime is 21021202011023. The reversal of 21021202011022 is 22011020212012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21021202010987 and 21021202011005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21021202011023) 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, 6774523 + ... + 9377449.

It is an arithmetic number, because the mean of its divisors is an integer number (1050127224516).

Almost surely, 2^{21021202011022} is an apocalyptic number.

21021202011022 is a deficient number, since it is larger than the sum of its proper divisors (12582869173490).

21021202011022 is a wasteful number, since it uses less digits than its factorization.

21021202011022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604492.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21021202011022 its reverse (22011020212012), we get a palindrome (43032222223034).

The spelling of 21021202011022 in words is "twenty-one trillion, twenty-one billion, two hundred two million, eleven thousand, twenty-two".