19200424120021 has 4 divisors (see below), whose sum is σ = 19291421390944. Its totient is φ = 19109426849100.

The previous prime is 19200424120013. The next prime is 19200424120049. The reversal of 19200424120021 is 12002142400291.

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 a cyclic number.

It is not a de Polignac number, because 19200424120021 - 2³ = 19200424120013 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 (19200424120921) 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, 45498635145 + ... + 45498635566.

It is an arithmetic number, because the mean of its divisors is an integer number (4822855347736).

Almost surely, 2^{19200424120021} is an apocalyptic number.

It is an amenable number.

19200424120021 is a deficient number, since it is larger than the sum of its proper divisors (90997270923).

19200424120021 is an equidigital number, since it uses as much as digits as its factorization.

19200424120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90997270922.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 19200424120021 in words is "nineteen trillion, two hundred billion, four hundred twenty-four million, one hundred twenty thousand, twenty-one".