21203122022 has 8 divisors (see below), whose sum is σ = 31838484672. Its totient is φ = 10590293800.

The previous prime is 21203122009. The next prime is 21203122051. The reversal of 21203122022 is 22022130212.

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

It is a congruent number.

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, 5631254 + ... + 5635017.

It is an arithmetic number, because the mean of its divisors is an integer number (3979810584).

Almost surely, 2^21203122022 is an apocalyptic number.

21203122022 is a deficient number, since it is larger than the sum of its proper divisors (10635362650).

21203122022 is a wasteful number, since it uses less digits than its factorization.

21203122022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11267214.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21203122022 its reverse (22022130212), we get a palindrome (43225252234).

The spelling of 21203122022 in words is "twenty-one billion, two hundred three million, one hundred twenty-two thousand, twenty-two".