21220001210143 has 2 divisors, whose sum is σ = 21220001210144. Its totient is φ = 21220001210142.

The previous prime is 21220001210101. The next prime is 21220001210171. The reversal of 21220001210143 is 34101210002212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21220001210143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21220001210143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21220001219143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610000605071 + 10610000605072.

It is an arithmetic number, because the mean of its divisors is an integer number (10610000605072).

Almost surely, 2^{21220001210143} is an apocalyptic number.

21220001210143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220001210143 is an equidigital number, since it uses as much as digits as its factorization.

21220001210143 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 21220001210143 its reverse (34101210002212), we get a palindrome (55321211212355).

The spelling of 21220001210143 in words is "twenty-one trillion, two hundred twenty billion, one million, two hundred ten thousand, one hundred forty-three".