121452134340 has 48 divisors (see below), whose sum is σ = 354851457408. Its totient is φ = 30979094784.

The previous prime is 121452134333. The next prime is 121452134351. The reversal of 121452134340 is 43431254121.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 121452134298 and 121452134307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44003017 + ... + 44005776.

It is an arithmetic number, because the mean of its divisors is an integer number (7392738696).

Almost surely, 2^121452134340 is an apocalyptic number.

121452134340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121452134340 is an abundant number, since it is smaller than the sum of its proper divisors (233399323068).

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

121452134340 is a wasteful number, since it uses less digits than its factorization.

121452134340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88008828 (or 88008826 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 121452134340 its reverse (43431254121), we get a palindrome (164883388461).

The spelling of 121452134340 in words is "one hundred twenty-one billion, four hundred fifty-two million, one hundred thirty-four thousand, three hundred forty".