21110000011222 has 4 divisors (see below), whose sum is σ = 31665000016836. Its totient is φ = 10555000005610.

The previous prime is 21110000011193. The next prime is 21110000011277. The reversal of 21110000011222 is 22211000001112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5277500002804 + ... + 5277500002807.

It is an arithmetic number, because the mean of its divisors is an integer number (7916250004209).

Almost surely, 2^{21110000011222} is an apocalyptic number.

21110000011222 is a deficient number, since it is larger than the sum of its proper divisors (10555000005614).

21110000011222 is a wasteful number, since it uses less digits than its factorization.

21110000011222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555000005613.

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

Adding to 21110000011222 its reverse (22211000001112), we get a palindrome (43321000012334).

The spelling of 21110000011222 in words is "twenty-one trillion, one hundred ten billion, eleven thousand, two hundred twenty-two".