30302221212 has 72 divisors (see below), whose sum is σ = 80668748160. Its totient is φ = 9564372000.

The previous prime is 30302221181. The next prime is 30302221241. The reversal of 30302221212 is 21212220303.

It is a super-2 number, since 2×30302221212² (a number of 22 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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1524337 + ... + 1544087.

It is an arithmetic number, because the mean of its divisors is an integer number (1120399280).

Almost surely, 2^30302221212 is an apocalyptic number.

It is an amenable number.

30302221212 is an abundant number, since it is smaller than the sum of its proper divisors (50366526948).

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

30302221212 is a wasteful number, since it uses less digits than its factorization.

30302221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22023 (or 22018 counting only the distinct ones).

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

Adding to 30302221212 its reverse (21212220303), we get a palindrome (51514441515).

Subtracting from 30302221212 its reverse (21212220303), we obtain a palindrome (9090000909).

The spelling of 30302221212 in words is "thirty billion, three hundred two million, two hundred twenty-one thousand, two hundred twelve".