121315341451 has 8 divisors (see below), whose sum is σ = 123178424544. Its totient is φ = 119456547840.

The previous prime is 121315341439. The next prime is 121315341457. The reversal of 121315341451 is 154143513121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121315341451 - 2³⁵ = 86955603083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121315341457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1015350 + ... + 1128523.

It is an arithmetic number, because the mean of its divisors is an integer number (15397303068).

Almost surely, 2^121315341451 is an apocalyptic number.

121315341451 is a deficient number, since it is larger than the sum of its proper divisors (1863083093).

121315341451 is an equidigital number, since it uses as much as digits as its factorization.

121315341451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2144741.

The product of its digits is 7200, while the sum is 31.

Adding to 121315341451 its reverse (154143513121), we get a palindrome (275458854572).

The spelling of 121315341451 in words is "one hundred twenty-one billion, three hundred fifteen million, three hundred forty-one thousand, four hundred fifty-one".