21342102141 has 16 divisors (see below), whose sum is σ = 30134320704. Its totient is φ = 13389214464.

The previous prime is 21342102091. The next prime is 21342102161. The reversal of 21342102141 is 14120124312.

It is not a de Polignac number, because 21342102141 - 2¹⁵ = 21342069373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21342102161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 388515 + ... + 440031.

It is an arithmetic number, because the mean of its divisors is an integer number (1883395044).

Almost surely, 2^21342102141 is an apocalyptic number.

It is an amenable number.

21342102141 is a deficient number, since it is larger than the sum of its proper divisors (8792218563).

21342102141 is a wasteful number, since it uses less digits than its factorization.

21342102141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59660.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21342102141 its reverse (14120124312), we get a palindrome (35462226453).

The spelling of 21342102141 in words is "twenty-one billion, three hundred forty-two million, one hundred two thousand, one hundred forty-one".