30203121222 has 12 divisors (see below), whose sum is σ = 65440096020. Its totient is φ = 10067707068.

The previous prime is 30203121191. The next prime is 30203121229. The reversal of 30203121222 is 22212130203.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1677951179 = 30203121222 / (3 + 0 + 2 + 0 + 3 + 1 + 2 + 1 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 30203121195 and 30203121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30203121229) 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, 838975572 + ... + 838975607.

It is an arithmetic number, because the mean of its divisors is an integer number (5453341335).

Almost surely, 2^30203121222 is an apocalyptic number.

30203121222 is an abundant number, since it is smaller than the sum of its proper divisors (35236974798).

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

30203121222 is a wasteful number, since it uses less digits than its factorization.

30203121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1677951187 (or 1677951184 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 30203121222 its reverse (22212130203), we get a palindrome (52415251425).

The spelling of 30203121222 in words is "thirty billion, two hundred three million, one hundred twenty-one thousand, two hundred twenty-two".