1211212002203 has 16 divisors (see below), whose sum is σ = 1421763932160. Its totient is φ = 1010044813536.

The previous prime is 1211212002197. The next prime is 1211212002239. The reversal of 1211212002203 is 3022002121121.

It is a cyclic number.

It is not a de Polignac number, because 1211212002203 - 2¹⁰ = 1211212001179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211212022203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3313238 + ... + 3660596.

It is an arithmetic number, because the mean of its divisors is an integer number (88860245760).

Almost surely, 2^{1211212002203} is an apocalyptic number.

1211212002203 is a deficient number, since it is larger than the sum of its proper divisors (210551929957).

1211212002203 is a wasteful number, since it uses less digits than its factorization.

1211212002203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360866.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1211212002203 its reverse (3022002121121), we get a palindrome (4233214123324).

The spelling of 1211212002203 in words is "one trillion, two hundred eleven billion, two hundred twelve million, two thousand, two hundred three".