20221211101001 has 8 divisors (see below), whose sum is σ = 20421536558664. Its totient is φ = 20020887907200.

The previous prime is 20221211100991. The next prime is 20221211101019. The reversal of 20221211101001 is 10010111212202.

It can be written as a sum of positive squares in 4 ways, for example, as 6749998901776 + 13471212199225 = 2598076^2 + 3670315^2 .

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 20221211101001 - 2¹⁴ = 20221211084617 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20221211101061) 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, 21706535 + ... + 22618931.

It is an arithmetic number, because the mean of its divisors is an integer number (2552692069833).

Almost surely, 2^{20221211101001} is an apocalyptic number.

It is an amenable number.

20221211101001 is a deficient number, since it is larger than the sum of its proper divisors (200325457663).

20221211101001 is a wasteful number, since it uses less digits than its factorization.

20221211101001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131931.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20221211101001 its reverse (10010111212202), we get a palindrome (30231322313203).

The spelling of 20221211101001 in words is "twenty trillion, two hundred twenty-one billion, two hundred eleven million, one hundred one thousand, one".