22120101001 has 8 divisors (see below), whose sum is σ = 22357125000. Its totient is φ = 21883430400.

The previous prime is 22120100927. The next prime is 22120101007. The reversal of 22120101001 is 10010102122.

It can be written as a sum of positive squares in 4 ways, for example, as 15114243600 + 7005857401 = 122940^2 + 83701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22120101001 - 2⁹ = 22120100489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120101007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38475 + ... + 213823.

It is an arithmetic number, because the mean of its divisors is an integer number (2794640625).

Almost surely, 2^22120101001 is an apocalyptic number.

It is an amenable number.

22120101001 is a deficient number, since it is larger than the sum of its proper divisors (237023999).

22120101001 is a wasteful number, since it uses less digits than its factorization.

22120101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176699.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 22120101001 its reverse (10010102122), we get a palindrome (32130203123).

The spelling of 22120101001 in words is "twenty-two billion, one hundred twenty million, one hundred one thousand, one".