20133421021242 has 16 divisors (see below), whose sum is σ = 44740935602880. Its totient is φ = 6711140340396.

The previous prime is 20133421021213. The next prime is 20133421021253. The reversal of 20133421021242 is 24212012433102.

20133421021242 is a `hidden beast` number, since 20 + 1 + 3 + 3 + 421 + 0 + 212 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186420564958 + ... + 186420565065.

It is an arithmetic number, because the mean of its divisors is an integer number (2796308475180).

Almost surely, 2^{20133421021242} is an apocalyptic number.

20133421021242 is an abundant number, since it is smaller than the sum of its proper divisors (24607514581638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20133421021242 is a wasteful number, since it uses less digits than its factorization.

20133421021242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372841130034 (or 372841130028 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 20133421021242 its reverse (24212012433102), we get a palindrome (44345433454344).

The spelling of 20133421021242 in words is "twenty trillion, one hundred thirty-three billion, four hundred twenty-one million, twenty-one thousand, two hundred forty-two".