21322200121 has 8 divisors (see below), whose sum is σ = 22493116800. Its totient is φ = 20156153040.

The previous prime is 21322200103. The next prime is 21322200127. The reversal of 21322200121 is 12100222312.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-21322200121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21322200095 and 21322200104.

It is not an unprimeable number, because it can be changed into a prime (21322200127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1208401 + ... + 1225918.

It is an arithmetic number, because the mean of its divisors is an integer number (2811639600).

Almost surely, 2^21322200121 is an apocalyptic number.

It is an amenable number.

21322200121 is a deficient number, since it is larger than the sum of its proper divisors (1170916679).

21322200121 is a wasteful number, since it uses less digits than its factorization.

21322200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434799.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21322200121 its reverse (12100222312), we get a palindrome (33422422433).

The spelling of 21322200121 in words is "twenty-one billion, three hundred twenty-two million, two hundred thousand, one hundred twenty-one".