21004204322122 has 8 divisors (see below), whose sum is σ = 36007207409376. Its totient is φ = 9001801852332.

The previous prime is 21004204322117. The next prime is 21004204322173. The reversal of 21004204322122 is 22122340240012.

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

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, 750150154348 + ... + 750150154375.

It is an arithmetic number, because the mean of its divisors is an integer number (4500900926172).

Almost surely, 2^{21004204322122} is an apocalyptic number.

21004204322122 is a deficient number, since it is larger than the sum of its proper divisors (15003003087254).

21004204322122 is a wasteful number, since it uses less digits than its factorization.

21004204322122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500300308732.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21004204322122 its reverse (22122340240012), we get a palindrome (43126544562134).

The spelling of 21004204322122 in words is "twenty-one trillion, four billion, two hundred four million, three hundred twenty-two thousand, one hundred twenty-two".