21010301143 has 4 divisors (see below), whose sum is σ = 22626478168. Its totient is φ = 19394124120.

The previous prime is 21010301107. The next prime is 21010301153. The reversal of 21010301143 is 34110301012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21010301143 - 2¹³ = 21010292951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010301153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 808088493 + ... + 808088518.

It is an arithmetic number, because the mean of its divisors is an integer number (5656619542).

Almost surely, 2^21010301143 is an apocalyptic number.

21010301143 is a deficient number, since it is larger than the sum of its proper divisors (1616177025).

21010301143 is a wasteful number, since it uses less digits than its factorization.

21010301143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1616177024.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 21010301143 its reverse (34110301012), we get a palindrome (55120602155).

The spelling of 21010301143 in words is "twenty-one billion, ten million, three hundred one thousand, one hundred forty-three".