21122022122121 has 8 divisors (see below), whose sum is σ = 28421069522560. Its totient is φ = 13952161401552.

The previous prime is 21122022122101. The next prime is 21122022122147. The reversal of 21122022122121 is 12122122022112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21122022122121 - 2⁹ = 21122022121609 is a prime.

It is a super-2 number, since 2×21122022122121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122022122101) 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 7 ways as a sum of consecutive naturals, for example, 32296669585 + ... + 32296670238.

It is an arithmetic number, because the mean of its divisors is an integer number (3552633690320).

Almost surely, 2^{21122022122121} is an apocalyptic number.

It is an amenable number.

21122022122121 is a deficient number, since it is larger than the sum of its proper divisors (7299047400439).

21122022122121 is a wasteful number, since it uses less digits than its factorization.

21122022122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64593339935.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21122022122121 its reverse (12122122022112), we get a palindrome (33244144144233).

The spelling of 21122022122121 in words is "twenty-one trillion, one hundred twenty-two billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-one".