20011011222001 has 32 divisors (see below), whose sum is σ = 20650909224960. Its totient is φ = 19384309511424.

The previous prime is 20011011221989. The next prime is 20011011222073. The reversal of 20011011222001 is 10022211011002.

It is a de Polignac number, because none of the positive numbers 2^k-20011011222001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20011011222401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1229698201 + ... + 1229714473.

It is an arithmetic number, because the mean of its divisors is an integer number (645340913280).

Almost surely, 2^{20011011222001} is an apocalyptic number.

It is an amenable number.

20011011222001 is a deficient number, since it is larger than the sum of its proper divisors (639898002959).

20011011222001 is a wasteful number, since it uses less digits than its factorization.

20011011222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17725.

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

Adding to 20011011222001 its reverse (10022211011002), we get a palindrome (30033222233003).

The spelling of 20011011222001 in words is "twenty trillion, eleven billion, eleven million, two hundred twenty-two thousand, one".