21101214125143 has 2 divisors, whose sum is σ = 21101214125144. Its totient is φ = 21101214125142.

The previous prime is 21101214125137. The next prime is 21101214125153. The reversal of 21101214125143 is 34152141210112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21101214125143 - 2⁵ = 21101214125111 is a prime.

It is a super-2 number, since 2×21101214125143² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21101214125153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550607062571 + 10550607062572.

It is an arithmetic number, because the mean of its divisors is an integer number (10550607062572).

Almost surely, 2^{21101214125143} is an apocalyptic number.

21101214125143 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101214125143 is an equidigital number, since it uses as much as digits as its factorization.

21101214125143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 28.

Adding to 21101214125143 its reverse (34152141210112), we get a palindrome (55253355335255).

The spelling of 21101214125143 in words is "twenty-one trillion, one hundred one billion, two hundred fourteen million, one hundred twenty-five thousand, one hundred forty-three".