21202143141 has 16 divisors (see below), whose sum is σ = 28760314304. Its totient is φ = 13890766464.

The previous prime is 21202143139. The next prime is 21202143191. The reversal of 21202143141 is 14134120212.

It is not a de Polignac number, because 21202143141 - 2¹ = 21202143139 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 (21202143101) 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, 114091 + ... + 235416.

It is an arithmetic number, because the mean of its divisors is an integer number (1797519644).

Almost surely, 2^21202143141 is an apocalyptic number.

It is an amenable number.

21202143141 is a deficient number, since it is larger than the sum of its proper divisors (7558171163).

21202143141 is a wasteful number, since it uses less digits than its factorization.

21202143141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349860.

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

Adding to 21202143141 its reverse (14134120212), we get a palindrome (35336263353).

The spelling of 21202143141 in words is "twenty-one billion, two hundred two million, one hundred forty-three thousand, one hundred forty-one".