121413021243240 has 64 divisors (see below), whose sum is σ = 364572922109760. Its totient is φ = 32347129364480.

The previous prime is 121413021243223. The next prime is 121413021243299. The reversal of 121413021243240 is 42342120314121.

It is a happy number.

It is a super-2 number, since 2×121413021243240² (a number of 29 digits) contains 22 as substring.

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 = 121413021243198 and 121413021243207.

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, 463560729 + ... + 463822568.

It is an arithmetic number, because the mean of its divisors is an integer number (5696451907965).

Almost surely, 2^{121413021243240} is an apocalyptic number.

121413021243240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121413021243240 is an abundant number, since it is smaller than the sum of its proper divisors (243159900866520).

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

121413021243240 is a wasteful number, since it uses less digits than its factorization.

121413021243240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927384402 (or 927384398 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 121413021243240 its reverse (42342120314121), we get a palindrome (163755141557361).

The spelling of 121413021243240 in words is "one hundred twenty-one trillion, four hundred thirteen billion, twenty-one million, two hundred forty-three thousand, two hundred forty".