22003798381021 has 4 divisors (see below), whose sum is σ = 22003920216544. Its totient is φ = 22003676545500.

The previous prime is 22003798380959. The next prime is 22003798381043. The reversal of 22003798381021 is 12018389730022.

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 22003798381021 - 2¹¹ = 22003798378973 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 (22003798301021) 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, 60646455 + ... + 61008196.

It is an arithmetic number, because the mean of its divisors is an integer number (5500980054136).

Almost surely, 2^{22003798381021} is an apocalyptic number.

It is an amenable number.

22003798381021 is a deficient number, since it is larger than the sum of its proper divisors (121835523).

22003798381021 is a wasteful number, since it uses less digits than its factorization.

22003798381021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121835522.

The product of its (nonzero) digits is 290304, while the sum is 46.

The spelling of 22003798381021 in words is "twenty-two trillion, three billion, seven hundred ninety-eight million, three hundred eighty-one thousand, twenty-one".