30231221010 has 32 divisors (see below), whose sum is σ = 72581035392. Its totient is φ = 8058758400.

The previous prime is 30231220997. The next prime is 30231221011. The reversal of 30231221010 is 1012213203.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (30231221011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95854 + ... + 263913.

It is an arithmetic number, because the mean of its divisors is an integer number (2268157356).

Almost surely, 2^30231221010 is an apocalyptic number.

30231221010 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30231221010 is an abundant number, since it is smaller than the sum of its proper divisors (42349814382).

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

30231221010 is a wasteful number, since it uses less digits than its factorization.

30231221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362578.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 30231221010 its reverse (1012213203), we get a palindrome (31243434213).

The spelling of 30231221010 in words is "thirty billion, two hundred thirty-one million, two hundred twenty-one thousand, ten".