21143211234113 has 8 divisors (see below), whose sum is σ = 22487319364608. Its totient is φ = 19810257528384.

The previous prime is 21143211234083. The next prime is 21143211234127. The reversal of 21143211234113 is 31143211234112.

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 21143211234113 - 2¹⁴ = 21143211217729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21143211234713) 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, 2788602281 + ... + 2788609862.

It is an arithmetic number, because the mean of its divisors is an integer number (2810914920576).

Almost surely, 2^{21143211234113} is an apocalyptic number.

It is an amenable number.

21143211234113 is a deficient number, since it is larger than the sum of its proper divisors (1344108130495).

21143211234113 is a wasteful number, since it uses less digits than its factorization.

21143211234113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5577212383.

The product of its digits is 3456, while the sum is 29.

Adding to 21143211234113 its reverse (31143211234112), we get a palindrome (52286422468225).

Subtracting 21143211234113 from its reverse (31143211234112), we obtain a palindrome (9999999999999).

The spelling of 21143211234113 in words is "twenty-one trillion, one hundred forty-three billion, two hundred eleven million, two hundred thirty-four thousand, one hundred thirteen".