219138052201 has 2 divisors, whose sum is σ = 219138052202. Its totient is φ = 219138052200.

The previous prime is 219138052141. The next prime is 219138052247. The reversal of 219138052201 is 102250831912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 180220626576 + 38917425625 = 424524^2 + 197275^2 .

It is a cyclic number.

It is not a de Polignac number, because 219138052201 - 2²³ = 219129663593 is a prime.

It is not a weakly prime, because it can be changed into another prime (219138052801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109569026100 + 109569026101.

It is an arithmetic number, because the mean of its divisors is an integer number (109569026101).

Almost surely, 2^219138052201 is an apocalyptic number.

It is an amenable number.

219138052201 is a deficient number, since it is larger than the sum of its proper divisors (1).

219138052201 is an equidigital number, since it uses as much as digits as its factorization.

219138052201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 34.

The spelling of 219138052201 in words is "two hundred nineteen billion, one hundred thirty-eight million, fifty-two thousand, two hundred one".