21143013401 has 8 divisors (see below), whose sum is σ = 22260453600. Its totient is φ = 20026038240.

The previous prime is 21143013329. The next prime is 21143013427. The reversal of 21143013401 is 10431034112.

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 21143013401 - 2¹⁴ = 21142997017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21143013481) 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, 20915 + ... + 206696.

It is an arithmetic number, because the mean of its divisors is an integer number (2782556700).

Almost surely, 2^21143013401 is an apocalyptic number.

It is an amenable number.

21143013401 is a deficient number, since it is larger than the sum of its proper divisors (1117440199).

21143013401 is a wasteful number, since it uses less digits than its factorization.

21143013401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232519.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21143013401 its reverse (10431034112), we get a palindrome (31574047513).

The spelling of 21143013401 in words is "twenty-one billion, one hundred forty-three million, thirteen thousand, four hundred one".