213233303021077 has 2 divisors, whose sum is σ = 213233303021078. Its totient is φ = 213233303021076.

The previous prime is 213233303021041. The next prime is 213233303021143. The reversal of 213233303021077 is 770120303332312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208922567855716 + 4310735165361 = 14454154^2 + 2076231^2 .

It is a cyclic number.

It is not a de Polignac number, because 213233303021077 - 2²³ = 213233294632469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213233303021017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106616651510538 + 106616651510539.

It is an arithmetic number, because the mean of its divisors is an integer number (106616651510539).

Almost surely, 2^{213233303021077} is an apocalyptic number.

It is an amenable number.

213233303021077 is a deficient number, since it is larger than the sum of its proper divisors (1).

213233303021077 is an equidigital number, since it uses as much as digits as its factorization.

213233303021077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 95256, while the sum is 37.

Adding to 213233303021077 its reverse (770120303332312), we get a palindrome (983353606353389).

The spelling of 213233303021077 in words is "two hundred thirteen trillion, two hundred thirty-three billion, three hundred three million, twenty-one thousand, seventy-seven".