20203122204 has 18 divisors (see below), whose sum is σ = 51069003440. Its totient is φ = 6734374056.

The previous prime is 20203122109. The next prime is 20203122209. The reversal of 20203122204 is 40222130202.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×20203122204² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203122209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 280598884 + ... + 280598955.

Almost surely, 2^20203122204 is an apocalyptic number.

It is an amenable number.

20203122204 is an abundant number, since it is smaller than the sum of its proper divisors (30865881236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20203122204 is a wasteful number, since it uses less digits than its factorization.

20203122204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561197849 (or 561197844 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 20203122204 its reverse (40222130202), we get a palindrome (60425252406).

The spelling of 20203122204 in words is "twenty billion, two hundred three million, one hundred twenty-two thousand, two hundred four".