121312232030 has 48 divisors (see below), whose sum is σ = 240248644272. Its totient is φ = 44071104000.

The previous prime is 121312232029. The next prime is 121312232039. The reversal of 121312232030 is 30232213121.

It is a junction number, because it is equal to n+sod(n) for n = 121312231993 and 121312232011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121312232039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1224014 + ... + 1319406.

It is an arithmetic number, because the mean of its divisors is an integer number (5005180089).

Almost surely, 2^121312232030 is an apocalyptic number.

121312232030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121312232030 is a deficient number, since it is larger than the sum of its proper divisors (118936412242).

121312232030 is a wasteful number, since it uses less digits than its factorization.

121312232030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96473 (or 96462 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121312232030 its reverse (30232213121), we get a palindrome (151544445151).

The spelling of 121312232030 in words is "one hundred twenty-one billion, three hundred twelve million, two hundred thirty-two thousand, thirty".