220201477 has 2 divisors, whose sum is σ = 220201478. Its totient is φ = 220201476.

The previous prime is 220201441. The next prime is 220201481. The reversal of 220201477 is 774102022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205463556 + 14737921 = 14334^2 + 3839^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220201477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220201777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110100738 + 110100739.

It is an arithmetic number, because the mean of its divisors is an integer number (110100739).

Almost surely, 2^220201477 is an apocalyptic number.

It is an amenable number.

220201477 is a deficient number, since it is larger than the sum of its proper divisors (1).

220201477 is an equidigital number, since it uses as much as digits as its factorization.

220201477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 220201477 is about 14839.1872081998. The cubic root of 220201477 is about 603.8653020759.

Adding to 220201477 its reverse (774102022), we get a palindrome (994303499).

The spelling of 220201477 in words is "two hundred twenty million, two hundred one thousand, four hundred seventy-seven".