22011010121221 has 32 divisors (see below), whose sum is σ = 24192317140992. Its totient is φ = 19860184143360.

The previous prime is 22011010121197. The next prime is 22011010121231. The reversal of 22011010121221 is 12212101011022.

It is not a de Polignac number, because 22011010121221 - 2²¹ = 22011008024069 is a prime.

It is a super-2 number, since 2×22011010121221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22011010121195 and 22011010121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011010121231) 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 31 ways as a sum of consecutive naturals, for example, 3269120371 + ... + 3269127103.

It is an arithmetic number, because the mean of its divisors is an integer number (756009910656).

Almost surely, 2^{22011010121221} is an apocalyptic number.

It is an amenable number.

22011010121221 is a deficient number, since it is larger than the sum of its proper divisors (2181307019771).

22011010121221 is a wasteful number, since it uses less digits than its factorization.

22011010121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9613.

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

Adding to 22011010121221 its reverse (12212101011022), we get a palindrome (34223111132243).

The spelling of 22011010121221 in words is "twenty-two trillion, eleven billion, ten million, one hundred twenty-one thousand, two hundred twenty-one".