1212210220203 has 12 divisors (see below), whose sum is σ = 1762566149968. Its totient is φ = 802788224400.

The previous prime is 1212210220189. The next prime is 1212210220223. The reversal of 1212210220203 is 3020220122121.

1212210220203 is a `hidden beast` number, since 1 + 21 + 221 + 0 + 220 + 203 = 666.

It is not a de Polignac number, because 1212210220203 - 2⁴ = 1212210220187 is a prime.

It is a super-4 number, since 4×1212210220203⁴ (a number of 49 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212210220223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445992100 + ... + 445994817.

Almost surely, 2^{1212210220203} is an apocalyptic number.

1212210220203 is a deficient number, since it is larger than the sum of its proper divisors (550355929765).

1212210220203 is a wasteful number, since it uses less digits than its factorization.

1212210220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891987074 (or 891987071 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1212210220203 its reverse (3020220122121), we get a palindrome (4232430342324).

The spelling of 1212210220203 in words is "one trillion, two hundred twelve billion, two hundred ten million, two hundred twenty thousand, two hundred three".