21133022398 has 4 divisors (see below), whose sum is σ = 31699533600. Its totient is φ = 10566511198.

The previous prime is 21133022381. The next prime is 21133022447. The reversal of 21133022398 is 89322033112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5283255598 + ... + 5283255601.

It is an arithmetic number, because the mean of its divisors is an integer number (7924883400).

Almost surely, 2^21133022398 is an apocalyptic number.

21133022398 is a deficient number, since it is larger than the sum of its proper divisors (10566511202).

21133022398 is a wasteful number, since it uses less digits than its factorization.

21133022398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10566511201.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 21133022398 in words is "twenty-one billion, one hundred thirty-three million, twenty-two thousand, three hundred ninety-eight".