20211122021001 has 4 divisors (see below), whose sum is σ = 26948162694672. Its totient is φ = 13474081347332.

The previous prime is 20211122020979. The next prime is 20211122021071. The reversal of 20211122021001 is 10012022111202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20211122021001 - 2⁶ = 20211122020937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20211122021071) 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, 3368520336831 + ... + 3368520336836.

It is an arithmetic number, because the mean of its divisors is an integer number (6737040673668).

Almost surely, 2^{20211122021001} is an apocalyptic number.

It is an amenable number.

20211122021001 is a deficient number, since it is larger than the sum of its proper divisors (6737040673671).

20211122021001 is an equidigital number, since it uses as much as digits as its factorization.

20211122021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6737040673670.

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

Adding to 20211122021001 its reverse (10012022111202), we get a palindrome (30223144132203).

The spelling of 20211122021001 in words is "twenty trillion, two hundred eleven billion, one hundred twenty-two million, twenty-one thousand, one".