21202131142 has 8 divisors (see below), whose sum is σ = 31929903432. Its totient is φ = 10558830000.

The previous prime is 21202131133. The next prime is 21202131161. The reversal of 21202131142 is 24113120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21117159 + ... + 21118162.

It is an arithmetic number, because the mean of its divisors is an integer number (3991237929).

Almost surely, 2^21202131142 is an apocalyptic number.

21202131142 is a deficient number, since it is larger than the sum of its proper divisors (10727772290).

21202131142 is a wasteful number, since it uses less digits than its factorization.

21202131142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42235574.

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

Adding to 21202131142 its reverse (24113120212), we get a palindrome (45315251354).

The spelling of 21202131142 in words is "twenty-one billion, two hundred two million, one hundred thirty-one thousand, one hundred forty-two".