22101021210121 has 4 divisors (see below), whose sum is σ = 25258309954432. Its totient is φ = 18943732465812.

The previous prime is 22101021210119. The next prime is 22101021210167. The reversal of 22101021210121 is 12101212010122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 22101021210121 - 2¹ = 22101021210119 is a prime.

It is a super-2 number, since 2×22101021210121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22101021210095 and 22101021210104.

It is not an unprimeable number, because it can be changed into a prime (22101021211121) 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 3 ways as a sum of consecutive naturals, for example, 1578644372145 + ... + 1578644372158.

It is an arithmetic number, because the mean of its divisors is an integer number (6314577488608).

Almost surely, 2^{22101021210121} is an apocalyptic number.

It is an amenable number.

22101021210121 is a deficient number, since it is larger than the sum of its proper divisors (3157288744311).

22101021210121 is an equidigital number, since it uses as much as digits as its factorization.

22101021210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157288744310.

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

Adding to 22101021210121 its reverse (12101212010122), we get a palindrome (34202233220243).

The spelling of 22101021210121 in words is "twenty-two trillion, one hundred one billion, twenty-one million, two hundred ten thousand, one hundred twenty-one".