21143140201 has 2 divisors, whose sum is σ = 21143140202. Its totient is φ = 21143140200.

The previous prime is 21143140153. The next prime is 21143140217. The reversal of 21143140201 is 10204134112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12669753600 + 8473386601 = 112560^2 + 92051^2 .

It is a cyclic number.

It is not a de Polignac number, because 21143140201 - 2²⁵ = 21109585769 is a prime.

It is not a weakly prime, because it can be changed into another prime (21143140301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571570100 + 10571570101.

It is an arithmetic number, because the mean of its divisors is an integer number (10571570101).

Almost surely, 2^21143140201 is an apocalyptic number.

It is an amenable number.

21143140201 is a deficient number, since it is larger than the sum of its proper divisors (1).

21143140201 is an equidigital number, since it uses as much as digits as its factorization.

21143140201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21143140201 its reverse (10204134112), we get a palindrome (31347274313).

The spelling of 21143140201 in words is "twenty-one billion, one hundred forty-three million, one hundred forty thousand, two hundred one".