121453213464 has 192 divisors, whose sum is σ = 363098155680. Its totient is φ = 36368640000.

The previous prime is 121453213463. The next prime is 121453213493. The reversal of 121453213464 is 464312354121.

121453213464 is a `hidden beast` number, since 12 + 1 + 453 + 2 + 134 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121453213463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 52873564 + ... + 52875860.

Almost surely, 2^121453213464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121453213464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181549077840).

121453213464 is an abundant number, since it is smaller than the sum of its proper divisors (241644942216).

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

121453213464 is a wasteful number, since it uses less digits than its factorization.

121453213464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082 (or 3075 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

Adding to 121453213464 its reverse (464312354121), we get a palindrome (585765567585).

The spelling of 121453213464 in words is "one hundred twenty-one billion, four hundred fifty-three million, two hundred thirteen thousand, four hundred sixty-four".