22121122102121 has 16 divisors (see below), whose sum is σ = 25360578110976. Its totient is φ = 18901532454336.

The previous prime is 22121122102091. The next prime is 22121122102127. The reversal of 22121122102121 is 12120122112122.

It is not a de Polignac number, because 22121122102121 - 2¹⁸ = 22121121839977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22121122102093 and 22121122102102.

It is not an unprimeable number, because it can be changed into a prime (22121122102127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4493975 + ... + 8027331.

It is an arithmetic number, because the mean of its divisors is an integer number (1585036131936).

Almost surely, 2^{22121122102121} is an apocalyptic number.

It is an amenable number.

22121122102121 is a deficient number, since it is larger than the sum of its proper divisors (3239456008855).

22121122102121 is a wasteful number, since it uses less digits than its factorization.

22121122102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536168.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22121122102121 its reverse (12120122112122), we get a palindrome (34241244214243).

The spelling of 22121122102121 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty-two million, one hundred two thousand, one hundred twenty-one".