21133455204242 has 8 divisors (see below), whose sum is σ = 31859480208000. Its totient is φ = 10513628468244.

The previous prime is 21133455204229. The next prime is 21133455204313. The reversal of 21133455204242 is 24240255433112.

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

It is a junction number, because it is equal to n+sod(n) for n = 21133455204196 and 21133455204205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26549566442 + ... + 26549567237.

It is an arithmetic number, because the mean of its divisors is an integer number (3982435026000).

Almost surely, 2^{21133455204242} is an apocalyptic number.

21133455204242 is a deficient number, since it is larger than the sum of its proper divisors (10726025003758).

21133455204242 is a wasteful number, since it uses less digits than its factorization.

21133455204242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53099133880.

The product of its (nonzero) digits is 230400, while the sum is 38.

The spelling of 21133455204242 in words is "twenty-one trillion, one hundred thirty-three billion, four hundred fifty-five million, two hundred four thousand, two hundred forty-two".