20211001210223 has 4 divisors (see below), whose sum is σ = 20358526766640. Its totient is φ = 20063475653808.

The previous prime is 20211001210199. The next prime is 20211001210259. The reversal of 20211001210223 is 32201210011202.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20211001210223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211001210823) 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, 73762778003 + ... + 73762778276.

It is an arithmetic number, because the mean of its divisors is an integer number (5089631691660).

Almost surely, 2^{20211001210223} is an apocalyptic number.

20211001210223 is a deficient number, since it is larger than the sum of its proper divisors (147525556417).

20211001210223 is a wasteful number, since it uses less digits than its factorization.

20211001210223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147525556416.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20211001210223 its reverse (32201210011202), we get a palindrome (52412211221425).

It can be divided in two parts, 2021100 and 1210223, that added together give a palindrome (3231323).

The spelling of 20211001210223 in words is "twenty trillion, two hundred eleven billion, one million, two hundred ten thousand, two hundred twenty-three".