220021011941 has 2 divisors, whose sum is σ = 220021011942. Its totient is φ = 220021011940.

The previous prime is 220021011929. The next prime is 220021011949. The reversal of 220021011941 is 149110120022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166125532225 + 53895479716 = 407585^2 + 232154^2 .

It is a cyclic number.

It is not a de Polignac number, because 220021011941 - 2¹⁰ = 220021010917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220021011949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110010505970 + 110010505971.

It is an arithmetic number, because the mean of its divisors is an integer number (110010505971).

Almost surely, 2^220021011941 is an apocalyptic number.

It is an amenable number.

220021011941 is a deficient number, since it is larger than the sum of its proper divisors (1).

220021011941 is an equidigital number, since it uses as much as digits as its factorization.

220021011941 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 220021011941 its reverse (149110120022), we get a palindrome (369131131963).

The spelling of 220021011941 in words is "two hundred twenty billion, twenty-one million, eleven thousand, nine hundred forty-one".