121121002 has 4 divisors (see below), whose sum is σ = 181681506. Its totient is φ = 60560500.

The previous prime is 121120969. The next prime is 121121003. The reversal of 121121002 is 200121121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 94070601 + 27050401 = 9699^2 + 5201^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121121002.

It is not an unprimeable number, because it can be changed into a prime (121121003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30280249 + ... + 30280252.

Almost surely, 2^121121002 is an apocalyptic number.

121121002 is a deficient number, since it is larger than the sum of its proper divisors (60560504).

121121002 is an equidigital number, since it uses as much as digits as its factorization.

121121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60560503.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 121121002 is about 11005.4987165507. The cubic root of 121121002 is about 494.7735617036.

Adding to 121121002 its reverse (200121121), we get a palindrome (321242123).

The spelling of 121121002 in words is "one hundred twenty-one million, one hundred twenty-one thousand, two".