220201312021 has 2 divisors, whose sum is σ = 220201312022. Its totient is φ = 220201312020.

The previous prime is 220201311947. The next prime is 220201312027. The reversal of 220201312021 is 120213102022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152481659121 + 67719652900 = 390489^2 + 260230^2 .

It is a cyclic number.

It is not a de Polignac number, because 220201312021 - 2⁷ = 220201311893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220201311986 and 220201312004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220201312027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100656010 + 110100656011.

It is an arithmetic number, because the mean of its divisors is an integer number (110100656011).

Almost surely, 2^220201312021 is an apocalyptic number.

It is an amenable number.

220201312021 is a deficient number, since it is larger than the sum of its proper divisors (1).

220201312021 is an equidigital number, since it uses as much as digits as its factorization.

220201312021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 220201312021 its reverse (120213102022), we get a palindrome (340414414043).

The spelling of 220201312021 in words is "two hundred twenty billion, two hundred one million, three hundred twelve thousand, twenty-one".