121220532 has 36 divisors (see below), whose sum is σ = 322547680. Its totient is φ = 38279952.

The previous prime is 121220531. The next prime is 121220537. The reversal of 121220532 is 235022121.

121220532 is a `hidden beast` number, since 12 + 122 + 0 + 532 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121220531) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 87928 + ... + 89295.

Almost surely, 2^121220532 is an apocalyptic number.

121220532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121220532 is an abundant number, since it is smaller than the sum of its proper divisors (201327148).

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

121220532 is a wasteful number, since it uses less digits than its factorization.

121220532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177252 (or 177247 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 121220532 is about 11010.0196185111. The cubic root of 121220532 is about 494.9090497118.

Adding to 121220532 its reverse (235022121), we get a palindrome (356242653).

The spelling of 121220532 in words is "one hundred twenty-one million, two hundred twenty thousand, five hundred thirty-two".