21403112042101 has 8 divisors (see below), whose sum is σ = 22333730065344. Its totient is φ = 20472498013440.

The previous prime is 21403112042089. The next prime is 21403112042107. The reversal of 21403112042101 is 10124021130412.

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

It is not a de Polignac number, because 21403112042101 - 2³⁹ = 20853356228213 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 (21403112042107) 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, 16400085 + ... + 17656981.

It is an arithmetic number, because the mean of its divisors is an integer number (2791716258168).

Almost surely, 2^{21403112042101} is an apocalyptic number.

It is an amenable number.

21403112042101 is a deficient number, since it is larger than the sum of its proper divisors (930618023243).

21403112042101 is a wasteful number, since it uses less digits than its factorization.

21403112042101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997291.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 21403112042101 its reverse (10124021130412), we get a palindrome (31527133172513).

The spelling of 21403112042101 in words is "twenty-one trillion, four hundred three billion, one hundred twelve million, forty-two thousand, one hundred one".