21201242014101 has 4 divisors (see below), whose sum is σ = 28268322685472. Its totient is φ = 14134161342732.

The previous prime is 21201242014091. The next prime is 21201242014133. The reversal of 21201242014101 is 10141024210212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 21201242014101 - 2¹⁴ = 21201241997717 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 (21201242014171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3533540335681 + ... + 3533540335686.

It is an arithmetic number, because the mean of its divisors is an integer number (7067080671368).

Almost surely, 2^{21201242014101} is an apocalyptic number.

It is an amenable number.

21201242014101 is a deficient number, since it is larger than the sum of its proper divisors (7067080671371).

21201242014101 is an equidigital number, since it uses as much as digits as its factorization.

21201242014101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7067080671370.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 21201242014101 its reverse (10141024210212), we get a palindrome (31342266224313).

The spelling of 21201242014101 in words is "twenty-one trillion, two hundred one billion, two hundred forty-two million, fourteen thousand, one hundred one".