121312230010 has 64 divisors (see below), whose sum is σ = 236088123552. Its totient is φ = 44715442176.

The previous prime is 121312230007. The next prime is 121312230031. The reversal of 121312230010 is 10032213121.

It can be written as a sum of positive squares in 16 ways, for example, as 75624450001 + 45687780009 = 274999^2 + 213747^2 .

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, 1664494 + ... + 1735846.

Almost surely, 2^121312230010 is an apocalyptic number.

121312230010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121312230010 is a deficient number, since it is larger than the sum of its proper divisors (114775893542).

121312230010 is a wasteful number, since it uses less digits than its factorization.

121312230010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71587.

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

Adding to 121312230010 its reverse (10032213121), we get a palindrome (131344443131).

The spelling of 121312230010 in words is "one hundred twenty-one billion, three hundred twelve million, two hundred thirty thousand, ten".