20111022221001 has 16 divisors (see below), whose sum is σ = 27180393684480. Its totient is φ = 13225215104640.

The previous prime is 20111022220997. The next prime is 20111022221011. The reversal of 20111022221001 is 10012222011102.

It is not a de Polignac number, because 20111022221001 - 2² = 20111022220997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111022221011) 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 15 ways as a sum of consecutive naturals, for example, 89343865 + ... + 89568678.

It is an arithmetic number, because the mean of its divisors is an integer number (1698774605280).

Almost surely, 2^{20111022221001} is an apocalyptic number.

It is an amenable number.

20111022221001 is a deficient number, since it is larger than the sum of its proper divisors (7069371463479).

20111022221001 is a wasteful number, since it uses less digits than its factorization.

20111022221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178913056.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20111022221001 its reverse (10012222011102), we get a palindrome (30123244232103).

The spelling of 20111022221001 in words is "twenty trillion, one hundred eleven billion, twenty-two million, two hundred twenty-one thousand, one".