121273152 has 224 divisors, whose sum is σ = 431499264. Its totient is φ = 29030400.

The previous prime is 121273151. The next prime is 121273171. The reversal of 121273152 is 251372121.

It is a tau number, because it is divible by the number of its divisors (224).

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 (121273151) 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, 191877 + ... + 192507.

It is an arithmetic number, because the mean of its divisors is an integer number (1926336).

Almost surely, 2^121273152 is an apocalyptic number.

121273152 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 121273152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215749632).

121273152 is an abundant number, since it is smaller than the sum of its proper divisors (310226112).

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

121273152 is a wasteful number, since it uses less digits than its factorization.

121273152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677 (or 667 counting only the distinct ones).

The product of its digits is 840, while the sum is 24.

The square root of 121273152 is about 11012.4090007591. The cubic root of 121273152 is about 494.9806501976.

The spelling of 121273152 in words is "one hundred twenty-one million, two hundred seventy-three thousand, one hundred fifty-two".