201022111020001 has 4 divisors (see below), whose sum is σ = 205925089337604. Its totient is φ = 196119132702400.

The previous prime is 201022111019927. The next prime is 201022111020007. The reversal of 201022111020001 is 100020111220102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 110033386502400 + 90988724517601 = 10489680^2 + 9538801^2 .

It is a cyclic number.

It is not a de Polignac number, because 201022111020001 - 2²³ = 201022102631393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201022111020007) 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, 2451489158740 + ... + 2451489158821.

It is an arithmetic number, because the mean of its divisors is an integer number (51481272334401).

Almost surely, 2^{201022111020001} is an apocalyptic number.

It is an amenable number.

201022111020001 is a deficient number, since it is larger than the sum of its proper divisors (4902978317603).

201022111020001 is an equidigital number, since it uses as much as digits as its factorization.

201022111020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4902978317602.

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

Adding to 201022111020001 its reverse (100020111220102), we get a palindrome (301042222240103).

The spelling of 201022111020001 in words is "two hundred one trillion, twenty-two billion, one hundred eleven million, twenty thousand, one".