121312346036 has 72 divisors (see below), whose sum is σ = 249096006432. Its totient is φ = 51542568000.

The previous prime is 121312346011. The next prime is 121312346041. The reversal of 121312346036 is 630643213121.

It is a junction number, because it is equal to n+sod(n) for n = 121312345993 and 121312346011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11737391 + ... + 11747721.

It is an arithmetic number, because the mean of its divisors is an integer number (3459666756).

Almost surely, 2^121312346036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121312346036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124548003216).

121312346036 is an abundant number, since it is smaller than the sum of its proper divisors (127783660396).

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

121312346036 is a wasteful number, since it uses less digits than its factorization.

121312346036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10861 (or 10852 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 121312346036 its reverse (630643213121), we get a palindrome (751955559157).

The spelling of 121312346036 in words is "one hundred twenty-one billion, three hundred twelve million, three hundred forty-six thousand, thirty-six".