1210920001203 has 16 divisors (see below), whose sum is σ = 1791191376000. Its totient is φ = 721452079680.

The previous prime is 1210920001201. The next prime is 1210920001303. The reversal of 1210920001203 is 3021000290121.

It is not a de Polignac number, because 1210920001203 - 2¹ = 1210920001201 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1210920001203.

It is not an unprimeable number, because it can be changed into a prime (1210920001201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310968778 + ... + 310972671.

It is an arithmetic number, because the mean of its divisors is an integer number (111949461000).

Almost surely, 2^{1210920001203} is an apocalyptic number.

1210920001203 is a deficient number, since it is larger than the sum of its proper divisors (580271374797).

1210920001203 is a wasteful number, since it uses less digits than its factorization.

1210920001203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 621941522.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1210920001203 its reverse (3021000290121), we get a palindrome (4231920291324).

The spelling of 1210920001203 in words is "one trillion, two hundred ten billion, nine hundred twenty million, one thousand, two hundred three".