21431142101 has 8 divisors (see below), whose sum is σ = 22367675904. Its totient is φ = 20495003760.

The previous prime is 21431142077. The next prime is 21431142121. The reversal of 21431142101 is 10124113412.

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

It is not a de Polignac number, because 21431142101 - 2¹⁴ = 21431125717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21431142121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14675 + ... + 207551.

It is an arithmetic number, because the mean of its divisors is an integer number (2795959488).

Almost surely, 2^21431142101 is an apocalyptic number.

It is an amenable number.

21431142101 is a deficient number, since it is larger than the sum of its proper divisors (936533803).

21431142101 is a wasteful number, since it uses less digits than its factorization.

21431142101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197731.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21431142101 its reverse (10124113412), we get a palindrome (31555255513).

The spelling of 21431142101 in words is "twenty-one billion, four hundred thirty-one million, one hundred forty-two thousand, one hundred one".