1002121203 has 4 divisors (see below), whose sum is σ = 1336161608. Its totient is φ = 668080800.

The previous prime is 1002121181. The next prime is 1002121217. The reversal of 1002121203 is 3021212001.

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

It is not a de Polignac number, because 1002121203 - 2⁵ = 1002121171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002121243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167020198 + ... + 167020203.

It is an arithmetic number, because the mean of its divisors is an integer number (334040402).

Almost surely, 2^1002121203 is an apocalyptic number.

1002121203 is a deficient number, since it is larger than the sum of its proper divisors (334040405).

1002121203 is an equidigital number, since it uses as much as digits as its factorization.

1002121203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334040404.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1002121203 is about 31656.2979989764. The cubic root of 1002121203 is about 1000.7065683103.

Adding to 1002121203 its reverse (3021212001), we get a palindrome (4023333204).

The spelling of 1002121203 in words is "one billion, two million, one hundred twenty-one thousand, two hundred three".