21011020011022 has 8 divisors (see below), whose sum is σ = 31517246091672. Its totient is φ = 10505271313800.

The previous prime is 21011020010957. The next prime is 21011020011049. The reversal of 21011020011022 is 22011002011012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21011020010993 and 21011020011011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119235804 + ... + 119411887.

It is an arithmetic number, because the mean of its divisors is an integer number (3939655761459).

Almost surely, 2^{21011020011022} is an apocalyptic number.

21011020011022 is a deficient number, since it is larger than the sum of its proper divisors (10506226080650).

21011020011022 is a wasteful number, since it uses less digits than its factorization.

21011020011022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238691714.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21011020011022 its reverse (22011002011012), we get a palindrome (43022022022034).

The spelling of 21011020011022 in words is "twenty-one trillion, eleven billion, twenty million, eleven thousand, twenty-two".