121544520052 has 24 divisors (see below), whose sum is σ = 214794792576. Its totient is φ = 60174727008.

The previous prime is 121544520029. The next prime is 121544520059. The reversal of 121544520052 is 250025445121.

It is a junction number, because it is equal to n+sod(n) for n = 121544519996 and 121544520023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121544520059) 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, 4842078 + ... + 4867114.

It is an arithmetic number, because the mean of its divisors is an integer number (8949783024).

Almost surely, 2^121544520052 is an apocalyptic number.

It is an amenable number.

121544520052 is a deficient number, since it is larger than the sum of its proper divisors (93250272524).

121544520052 is a wasteful number, since it uses less digits than its factorization.

121544520052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36927 (or 36925 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

Adding to 121544520052 its reverse (250025445121), we get a palindrome (371569965173).

The spelling of 121544520052 in words is "one hundred twenty-one billion, five hundred forty-four million, five hundred twenty thousand, fifty-two".