21122210011102 has 4 divisors (see below), whose sum is σ = 31683315016656. Its totient is φ = 10561105005550.

The previous prime is 21122210011073. The next prime is 21122210011129. The reversal of 21122210011102 is 20111001222112.

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

It is a super-2 number, since 2×21122210011102² (a number of 27 digits) contains 22 as substring.

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, 5280552502774 + ... + 5280552502777.

It is an arithmetic number, because the mean of its divisors is an integer number (7920828754164).

Almost surely, 2^{21122210011102} is an apocalyptic number.

21122210011102 is a deficient number, since it is larger than the sum of its proper divisors (10561105005554).

21122210011102 is a wasteful number, since it uses less digits than its factorization.

21122210011102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10561105005553.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21122210011102 its reverse (20111001222112), we get a palindrome (41233211233214).

The spelling of 21122210011102 in words is "twenty-one trillion, one hundred twenty-two billion, two hundred ten million, eleven thousand, one hundred two".