22012110021001 has 4 divisors (see below), whose sum is σ = 22012119406612. Its totient is φ = 22012100635392.

The previous prime is 22012110020951. The next prime is 22012110021017. The reversal of 22012110021001 is 10012001121022.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 4083228490000 + 17928881531001 = 2020700^2 + 4234251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22012110021001 is a prime.

It is a super-2 number, since 2×22012110021001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22012110021071) 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, 2194105 + ... + 6988441.

It is an arithmetic number, because the mean of its divisors is an integer number (5503029851653).

Almost surely, 2^{22012110021001} is an apocalyptic number.

It is an amenable number.

22012110021001 is a deficient number, since it is larger than the sum of its proper divisors (9385611).

22012110021001 is an equidigital number, since it uses as much as digits as its factorization.

22012110021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9385610.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 22012110021001 its reverse (10012001121022), we get a palindrome (32024111142023).

The spelling of 22012110021001 in words is "twenty-two trillion, twelve billion, one hundred ten million, twenty-one thousand, one".