22001112021101 has 16 divisors (see below), whose sum is σ = 22078866536496. Its totient is φ = 21923525431296.

The previous prime is 22001112021059. The next prime is 22001112021127. The reversal of 22001112021101 is 10112021110022.

It can be written as a sum of positive squares in 8 ways, for example, as 879045005476 + 21122067015625 = 937574^2 + 4595875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22001112021101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001112021701) 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, 918346415 + ... + 918370371.

It is an arithmetic number, because the mean of its divisors is an integer number (1379929158531).

Almost surely, 2^{22001112021101} is an apocalyptic number.

It is an amenable number.

22001112021101 is a deficient number, since it is larger than the sum of its proper divisors (77754515395).

22001112021101 is a wasteful number, since it uses less digits than its factorization.

22001112021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27328.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22001112021101 its reverse (10112021110022), we get a palindrome (32113133131123).

The spelling of 22001112021101 in words is "twenty-two trillion, one billion, one hundred twelve million, twenty-one thousand, one hundred one".