223020021001 has 2 divisors, whose sum is σ = 223020021002. Its totient is φ = 223020021000.

The previous prime is 223020020983. The next prime is 223020021043. The reversal of 223020021001 is 100120020322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220126118976 + 2893902025 = 469176^2 + 53795^2 .

It is a cyclic number.

It is not a de Polignac number, because 223020021001 - 2¹¹ = 223020018953 is a prime.

It is not a weakly prime, because it can be changed into another prime (223020021061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111510010500 + 111510010501.

It is an arithmetic number, because the mean of its divisors is an integer number (111510010501).

Almost surely, 2^223020021001 is an apocalyptic number.

It is an amenable number.

223020021001 is a deficient number, since it is larger than the sum of its proper divisors (1).

223020021001 is an equidigital number, since it uses as much as digits as its factorization.

223020021001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 223020021001 its reverse (100120020322), we get a palindrome (323140041323).

The spelling of 223020021001 in words is "two hundred twenty-three billion, twenty million, twenty-one thousand, one".