22012002101 has 4 divisors (see below), whose sum is σ = 23306825772. Its totient is φ = 20717178432.

The previous prime is 22012002049. The next prime is 22012002107. The reversal of 22012002101 is 10120021022.

It is a happy number.

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 15819099076 + 6192903025 = 125774^2 + 78695^2 .

It is a cyclic number.

It is not a de Polignac number, because 22012002101 - 2²² = 22007807797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012002107) 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, 647411810 + ... + 647411843.

It is an arithmetic number, because the mean of its divisors is an integer number (5826706443).

Almost surely, 2^22012002101 is an apocalyptic number.

It is an amenable number.

22012002101 is a deficient number, since it is larger than the sum of its proper divisors (1294823671).

22012002101 is a wasteful number, since it uses less digits than its factorization.

22012002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294823670.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22012002101 its reverse (10120021022), we get a palindrome (32132023123).

The spelling of 22012002101 in words is "twenty-two billion, twelve million, two thousand, one hundred one".