121322013432 has 128 divisors (see below), whose sum is σ = 328142707200. Its totient is φ = 37248864768.

The previous prime is 121322013409. The next prime is 121322013433. The reversal of 121322013432 is 234310223121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121322013433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41790493 + ... + 41793395.

It is an arithmetic number, because the mean of its divisors is an integer number (2563614900).

Almost surely, 2^121322013432 is an apocalyptic number.

121322013432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121322013432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164071353600).

121322013432 is an abundant number, since it is smaller than the sum of its proper divisors (206820693768).

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

121322013432 is a wasteful number, since it uses less digits than its factorization.

121322013432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5445 (or 5441 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 121322013432 its reverse (234310223121), we get a palindrome (355632236553).

The spelling of 121322013432 in words is "one hundred twenty-one billion, three hundred twenty-two million, thirteen thousand, four hundred thirty-two".