22121211100101 has 32 divisors (see below), whose sum is σ = 30866307120000. Its totient is φ = 14079366512640.

The previous prime is 22121211100091. The next prime is 22121211100147. The reversal of 22121211100101 is 10100111212122.

It is a happy number.

It is not a de Polignac number, because 22121211100101 - 2⁷ = 22121211099973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121211110101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7252476 + ... + 9840773.

It is an arithmetic number, because the mean of its divisors is an integer number (964572097500).

Almost surely, 2^{22121211100101} is an apocalyptic number.

It is an amenable number.

22121211100101 is a deficient number, since it is larger than the sum of its proper divisors (8745096019899).

22121211100101 is a wasteful number, since it uses less digits than its factorization.

22121211100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17093509.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 22121211100101 its reverse (10100111212122), we get a palindrome (32221322312223).

The spelling of 22121211100101 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred eleven million, one hundred thousand, one hundred one".