20111001022001 has 8 divisors (see below), whose sum is σ = 20264918254944. Its totient is φ = 19957089821760.

The previous prime is 20111001021997. The next prime is 20111001022051. The reversal of 20111001022001 is 10022010011102.

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 20111001022001 - 2² = 20111001021997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20111001022051) 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, 5301881 + ... + 8266313.

It is an arithmetic number, because the mean of its divisors is an integer number (2533114781868).

Almost surely, 2^{20111001022001} is an apocalyptic number.

It is an amenable number.

20111001022001 is a deficient number, since it is larger than the sum of its proper divisors (153917232943).

20111001022001 is a wasteful number, since it uses less digits than its factorization.

20111001022001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3016351.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20111001022001 its reverse (10022010011102), we get a palindrome (30133011033103).

The spelling of 20111001022001 in words is "twenty trillion, one hundred eleven billion, one million, twenty-two thousand, one".