30121312210 has 32 divisors (see below), whose sum is σ = 61718931072. Its totient is φ = 10476977280.

The previous prime is 30121312171. The next prime is 30121312217. The reversal of 30121312210 is 1221312103.

It is not an unprimeable number, because it can be changed into a prime (30121312217) 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, 5950299 + ... + 5955358.

It is an arithmetic number, because the mean of its divisors is an integer number (1928716596).

Almost surely, 2^30121312210 is an apocalyptic number.

30121312210 is an abundant number, since it is smaller than the sum of its proper divisors (31597618862).

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

30121312210 is a wasteful number, since it uses less digits than its factorization.

30121312210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11905698.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 30121312210 its reverse (1221312103), we get a palindrome (31342624313).

The spelling of 30121312210 in words is "thirty billion, one hundred twenty-one million, three hundred twelve thousand, two hundred ten".