121435214447 has 8 divisors (see below), whose sum is σ = 122361133440. Its totient is φ = 120512098080.

The previous prime is 121435214441. The next prime is 121435214471. The reversal of 121435214447 is 744412534121.

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 121435214447 - 2⁴ = 121435214431 is a prime.

It is a super-2 number, since 2×121435214447² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121435214447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121435214441) 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, 613628 + ... + 787025.

It is an arithmetic number, because the mean of its divisors is an integer number (15295141680).

Almost surely, 2^121435214447 is an apocalyptic number.

121435214447 is a deficient number, since it is larger than the sum of its proper divisors (925918993).

121435214447 is a wasteful number, since it uses less digits than its factorization.

121435214447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401313.

The product of its digits is 107520, while the sum is 38.

Adding to 121435214447 its reverse (744412534121), we get a palindrome (865847748568).

The spelling of 121435214447 in words is "one hundred twenty-one billion, four hundred thirty-five million, two hundred fourteen thousand, four hundred forty-seven".