21011110101022 has 8 divisors (see below), whose sum is σ = 31516687298736. Its totient is φ = 10505547668112.

The previous prime is 21011110101011. The next prime is 21011110101071. The reversal of 21011110101022 is 22010101111012.

It is a happy number.

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 = 21011110100993 and 21011110101011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1121343 + ... + 6578725.

It is an arithmetic number, because the mean of its divisors is an integer number (3939585912342).

Almost surely, 2^{21011110101022} is an apocalyptic number.

21011110101022 is a deficient number, since it is larger than the sum of its proper divisors (10505577197714).

21011110101022 is a wasteful number, since it uses less digits than its factorization.

21011110101022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7382402.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21011110101022 its reverse (22010101111012), we get a palindrome (43021211212034).

The spelling of 21011110101022 in words is "twenty-one trillion, eleven billion, one hundred ten million, one hundred one thousand, twenty-two".