22001021013 has 32 divisors (see below), whose sum is σ = 31946192640. Its totient is φ = 13425843200.

The previous prime is 22001021011. The next prime is 22001021027. The reversal of 22001021013 is 31012010022.

It is a cyclic number.

It is not a de Polignac number, because 22001021013 - 2¹ = 22001021011 is a prime.

It is a super-2 number, since 2×22001021013² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22001021013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177463 + ... + 274763.

It is an arithmetic number, because the mean of its divisors is an integer number (998318520).

Almost surely, 2^22001021013 is an apocalyptic number.

22001021013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22001021013 is a deficient number, since it is larger than the sum of its proper divisors (9945171627).

22001021013 is a wasteful number, since it uses less digits than its factorization.

22001021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97469.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 22001021013 its reverse (31012010022), we get a palindrome (53013031035).

The spelling of 22001021013 in words is "twenty-two billion, one million, twenty-one thousand, thirteen".