21142301302 has 4 divisors (see below), whose sum is σ = 31713451956. Its totient is φ = 10571150650.

The previous prime is 21142301287. The next prime is 21142301347. The reversal of 21142301302 is 20310324112.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21142301302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5285575324 + ... + 5285575327.

It is an arithmetic number, because the mean of its divisors is an integer number (7928362989).

Almost surely, 2^21142301302 is an apocalyptic number.

21142301302 is a deficient number, since it is larger than the sum of its proper divisors (10571150654).

21142301302 is a wasteful number, since it uses less digits than its factorization.

21142301302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10571150653.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21142301302 its reverse (20310324112), we get a palindrome (41452625414).

The spelling of 21142301302 in words is "twenty-one billion, one hundred forty-two million, three hundred one thousand, three hundred two".