22121001101 has 4 divisors (see below), whose sum is σ = 22133367900. Its totient is φ = 22108634304.

The previous prime is 22121001083. The next prime is 22121001107. The reversal of 22121001101 is 10110012122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17490062500 + 4630938601 = 132250^2 + 68051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22121001101 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 (22121001107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6180716 + ... + 6184293.

It is an arithmetic number, because the mean of its divisors is an integer number (5533341975).

Almost surely, 2^22121001101 is an apocalyptic number.

It is an amenable number.

22121001101 is a deficient number, since it is larger than the sum of its proper divisors (12366799).

22121001101 is a wasteful number, since it uses less digits than its factorization.

22121001101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12366798.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22121001101 its reverse (10110012122), we get a palindrome (32231013223).

The spelling of 22121001101 in words is "twenty-two billion, one hundred twenty-one million, one thousand, one hundred one".