121532263552 has 32 divisors (see below), whose sum is σ = 276702923520. Its totient is φ = 52085255424.

The previous prime is 121532263513. The next prime is 121532263579. The reversal of 121532263552 is 255362235121.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67818448 + ... + 67820239.

It is an arithmetic number, because the mean of its divisors is an integer number (8646966360).

Almost surely, 2^121532263552 is an apocalyptic number.

It is an amenable number.

121532263552 is an abundant number, since it is smaller than the sum of its proper divisors (155170659968).

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

121532263552 is an equidigital number, since it uses as much as digits as its factorization.

121532263552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135638708 (or 135638696 counting only the distinct ones).

The product of its digits is 108000, while the sum is 37.

Adding to 121532263552 its reverse (255362235121), we get a palindrome (376894498673).

The spelling of 121532263552 in words is "one hundred twenty-one billion, five hundred thirty-two million, two hundred sixty-three thousand, five hundred fifty-two".