121202144 has 48 divisors (see below), whose sum is σ = 274176000. Its totient is φ = 51663744.

The previous prime is 121202131. The next prime is 121202171. The reversal of 121202144 is 441202121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43217 + ... + 45935.

It is an arithmetic number, because the mean of its divisors is an integer number (5712000).

Almost surely, 2^121202144 is an apocalyptic number.

121202144 is a gapful number since it is divisible by the number (14) 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 121202144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137088000).

121202144 is an abundant number, since it is smaller than the sum of its proper divisors (152973856).

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

121202144 is a wasteful number, since it uses less digits than its factorization.

121202144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935 (or 2927 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 121202144 is about 11009.1845292919. The cubic root of 121202144 is about 494.8840241169.

Adding to 121202144 its reverse (441202121), we get a palindrome (562404265).

The spelling of 121202144 in words is "one hundred twenty-one million, two hundred two thousand, one hundred forty-four".