22102012212121 has 16 divisors (see below), whose sum is σ = 22468658503680. Its totient is φ = 21737119703040.

The previous prime is 22102012212109. The next prime is 22102012212127. The reversal of 22102012212121 is 12121221020122.

It is a cyclic number.

It is not a de Polignac number, because 22102012212121 - 2⁴¹ = 19902988956569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22102012212127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119320345 + ... + 119505433.

It is an arithmetic number, because the mean of its divisors is an integer number (1404291156480).

Almost surely, 2^{22102012212121} is an apocalyptic number.

It is an amenable number.

22102012212121 is a deficient number, since it is larger than the sum of its proper divisors (366646291559).

22102012212121 is a wasteful number, since it uses less digits than its factorization.

22102012212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189816.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22102012212121 its reverse (12121221020122), we get a palindrome (34223233232243).

It can be divided in two parts, 221020122 and 12121, that multiplied together give a palindrome (2678984898762).

The spelling of 22102012212121 in words is "twenty-two trillion, one hundred two billion, twelve million, two hundred twelve thousand, one hundred twenty-one".