220211211021401 has 2 divisors, whose sum is σ = 220211211021402. Its totient is φ = 220211211021400.

The previous prime is 220211211021353. The next prime is 220211211021509. The reversal of 220211211021401 is 104120112112022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164175147217225 + 56036063804176 = 12813085^2 + 7485724^2 .

It is a cyclic number.

It is not a de Polignac number, because 220211211021401 - 2³⁰ = 220210137279577 is a prime.

It is not a weakly prime, because it can be changed into another prime (220211211821401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110105605510700 + 110105605510701.

It is an arithmetic number, because the mean of its divisors is an integer number (110105605510701).

Almost surely, 2^{220211211021401} is an apocalyptic number.

It is an amenable number.

220211211021401 is a deficient number, since it is larger than the sum of its proper divisors (1).

220211211021401 is an equidigital number, since it uses as much as digits as its factorization.

220211211021401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 220211211021401 its reverse (104120112112022), we get a palindrome (324331323133423).

The spelling of 220211211021401 in words is "two hundred twenty trillion, two hundred eleven billion, two hundred eleven million, twenty-one thousand, four hundred one".