2121201201003 has 4 divisors (see below), whose sum is σ = 2828268268008. Its totient is φ = 1414134134000.

The previous prime is 2121201200969. The next prime is 2121201201017. The reversal of 2121201201003 is 3001021021212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121201201003 - 2⁸ = 2121201200747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121201201703) 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, 353533533498 + ... + 353533533503.

It is an arithmetic number, because the mean of its divisors is an integer number (707067067002).

Almost surely, 2^{2121201201003} is an apocalyptic number.

2121201201003 is a deficient number, since it is larger than the sum of its proper divisors (707067067005).

2121201201003 is an equidigital number, since it uses as much as digits as its factorization.

2121201201003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707067067004.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 2121201201003 its reverse (3001021021212), we get a palindrome (5122222222215).

The spelling of 2121201201003 in words is "two trillion, one hundred twenty-one billion, two hundred one million, two hundred one thousand, three".