135432121000 has 64 divisors (see below), whose sum is σ = 345721296960. Its totient is φ = 49248040000.

The previous prime is 135432120949. The next prime is 135432121003. The reversal of 135432121000 is 121234531.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (135432121003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6145006 + ... + 6167005.

It is an arithmetic number, because the mean of its divisors is an integer number (5401895265).

Almost surely, 2^135432121000 is an apocalyptic number.

135432121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135432121000 is an abundant number, since it is smaller than the sum of its proper divisors (210289175960).

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

135432121000 is a wasteful number, since it uses less digits than its factorization.

135432121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12312043 (or 12312029 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 135432121000 its reverse (121234531), we get a palindrome (135553355531).

The spelling of 135432121000 in words is "one hundred thirty-five billion, four hundred thirty-two million, one hundred twenty-one thousand".