30910221000 has 128 divisors (see below), whose sum is σ = 107155526400. Its totient is φ = 8242718400.

The previous prime is 30910220977. The next prime is 30910221011. The reversal of 30910221000 is 12201903.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 545412 + ... + 599411.

It is an arithmetic number, because the mean of its divisors is an integer number (837152550).

Almost surely, 2^30910221000 is an apocalyptic number.

30910221000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30910221000 is an abundant number, since it is smaller than the sum of its proper divisors (76245305400).

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

30910221000 is a wasteful number, since it uses less digits than its factorization.

30910221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144853 (or 1144833 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 30910221000 its reverse (12201903), we get a palindrome (30922422903).

The spelling of 30910221000 in words is "thirty billion, nine hundred ten million, two hundred twenty-one thousand".