121002 has 32 divisors (see below), whose sum is σ = 287232. Its totient is φ = 33264.

The previous prime is 121001. The next prime is 121007. The reversal of 121002 is 200121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is not an unprimeable number, because it can be changed into a prime (121001) 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, 1773 + ... + 1839.

It is an arithmetic number, because the mean of its divisors is an integer number (8976).

2¹²¹⁰⁰² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143616).

121002 is an abundant number, since it is smaller than the sum of its proper divisors (166230).

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

121002 is a wasteful number, since it uses less digits than its factorization.

121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 121002 is about 347.8534174045. The cubic root of 121002 is about 49.4611469427.

Adding to 121002 its reverse (200121), we get a palindrome (321123).

The spelling of 121002 in words is "one hundred twenty-one thousand, two", and thus it is an iban number.