121221002 has 32 divisors (see below), whose sum is σ = 214704000. Its totient is φ = 51301824.

The previous prime is 121220993. The next prime is 121221013. The reversal of 121221002 is 200122121.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55874 + ... + 58002.

It is an arithmetic number, because the mean of its divisors is an integer number (6709500).

Almost surely, 2^121221002 is an apocalyptic number.

121221002 is a deficient number, since it is larger than the sum of its proper divisors (93482998).

121221002 is an equidigital number, since it uses as much as digits as its factorization.

121221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235 (or 2221 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 121221002 is about 11010.0409626849. The cubic root of 121221002 is about 494.9096893365.

Adding to 121221002 its reverse (200122121), we get a palindrome (321343123).

The spelling of 121221002 in words is "one hundred twenty-one million, two hundred twenty-one thousand, two".