22000203121 has 8 divisors (see below), whose sum is σ = 23740786944. Its totient is φ = 20266513680.

The previous prime is 22000203107. The next prime is 22000203131. The reversal of 22000203121 is 12130200022.

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

It is a cyclic number.

It is not a de Polignac number, because 22000203121 - 2¹⁷ = 22000072049 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000203131) 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, 1716961 + ... + 1729726.

It is an arithmetic number, because the mean of its divisors is an integer number (2967598368).

Almost surely, 2^22000203121 is an apocalyptic number.

It is an amenable number.

22000203121 is a deficient number, since it is larger than the sum of its proper divisors (1740583823).

22000203121 is a wasteful number, since it uses less digits than its factorization.

22000203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3447191.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22000203121 its reverse (12130200022), we get a palindrome (34130403143).

The spelling of 22000203121 in words is "twenty-two billion, two hundred three thousand, one hundred twenty-one".