21124143101 has 8 divisors (see below), whose sum is σ = 23088248064. Its totient is φ = 19240205760.

The previous prime is 21124143059. The next prime is 21124143107. The reversal of 21124143101 is 10134142112.

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

It is a cyclic number.

It is not a de Polignac number, because 21124143101 - 2²² = 21119948797 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 (21124143107) 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, 20041355 + ... + 20042408.

It is an arithmetic number, because the mean of its divisors is an integer number (2886031008).

Almost surely, 2^21124143101 is an apocalyptic number.

It is an amenable number.

21124143101 is a deficient number, since it is larger than the sum of its proper divisors (1964104963).

21124143101 is a wasteful number, since it uses less digits than its factorization.

21124143101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40083811.

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

Adding to 21124143101 its reverse (10134142112), we get a palindrome (31258285213).

The spelling of 21124143101 in words is "twenty-one billion, one hundred twenty-four million, one hundred forty-three thousand, one hundred one".