121210002 has 24 divisors (see below), whose sum is σ = 269721036. Its totient is φ = 39311136.

The previous prime is 121209967. The next prime is 121210007. The reversal of 121210002 is 200012121.

It can be written as a sum of positive squares in 2 ways, for example, as 110061081 + 11148921 = 10491^2 + 3339^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (121210007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90333 + ... + 91664.

Almost surely, 2^121210002 is an apocalyptic number.

121210002 is an abundant number, since it is smaller than the sum of its proper divisors (148511034).

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

121210002 is a wasteful number, since it uses less digits than its factorization.

121210002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182042 (or 182039 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 121210002 is about 11009.5414073430. The cubic root of 121210002 is about 494.8947189624.

Adding to 121210002 its reverse (200012121), we get a palindrome (321222123).

The spelling of 121210002 in words is "one hundred twenty-one million, two hundred ten thousand, two".