121700531447 has 8 divisors (see below), whose sum is σ = 140573876112. Its totient is φ = 104128796800.

The previous prime is 121700531443. The next prime is 121700531467. The reversal of 121700531447 is 744135007121.

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 121700531447 - 2² = 121700531443 is a prime.

It is a super-2 number, since 2×121700531447² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121700531441) 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, 325402304 + ... + 325402677.

It is an arithmetic number, because the mean of its divisors is an integer number (17571734514).

Almost surely, 2^121700531447 is an apocalyptic number.

121700531447 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

121700531447 is a deficient number, since it is larger than the sum of its proper divisors (18873344665).

121700531447 is a wasteful number, since it uses less digits than its factorization.

121700531447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650805009.

The product of its (nonzero) digits is 23520, while the sum is 35.

Adding to 121700531447 its reverse (744135007121), we get a palindrome (865835538568).

The spelling of 121700531447 in words is "one hundred twenty-one billion, seven hundred million, five hundred thirty-one thousand, four hundred forty-seven".