121020272 has 40 divisors (see below), whose sum is σ = 247938000. Its totient is φ = 57065472.

The previous prime is 121020257. The next prime is 121020293. The reversal of 121020272 is 272020121.

It is a self number, because there is not a number n which added to its sum of digits gives 121020272.

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, 77354 + ... + 78902.

It is an arithmetic number, because the mean of its divisors is an integer number (6198450).

Almost surely, 2^121020272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121020272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123969000).

121020272 is an abundant number, since it is smaller than the sum of its proper divisors (126917728).

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

121020272 is a wasteful number, since it uses less digits than its factorization.

121020272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833 (or 1827 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 121020272 is about 11000.9214159542. The cubic root of 121020272 is about 494.6363645689.

Adding to 121020272 its reverse (272020121), we get a palindrome (393040393).

The spelling of 121020272 in words is "one hundred twenty-one million, twenty thousand, two hundred seventy-two".