21240546030201 has 4 divisors (see below), whose sum is σ = 28320728040272. Its totient is φ = 14160364020132.

The previous prime is 21240546030157. The next prime is 21240546030241. The reversal of 21240546030201 is 10203064504212.

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 21240546030201 - 2⁴¹ = 19041522774649 is a prime.

It is a super-2 number, since 2×21240546030201² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21240546030241) 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, 3540091005031 + ... + 3540091005036.

It is an arithmetic number, because the mean of its divisors is an integer number (7080182010068).

Almost surely, 2^{21240546030201} is an apocalyptic number.

It is an amenable number.

21240546030201 is a deficient number, since it is larger than the sum of its proper divisors (7080182010071).

21240546030201 is an equidigital number, since it uses as much as digits as its factorization.

21240546030201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7080182010070.

The product of its (nonzero) digits is 11520, while the sum is 30.

The spelling of 21240546030201 in words is "twenty-one trillion, two hundred forty billion, five hundred forty-six million, thirty thousand, two hundred one".