12121031200203 has 64 divisors (see below), whose sum is σ = 19144384243200. Its totient is φ = 7557737788800.

The previous prime is 12121031200183. The next prime is 12121031200319. The reversal of 12121031200203 is 30200213012121.

12121031200203 is a `hidden beast` number, since 1 + 21 + 210 + 31 + 200 + 203 = 666.

It is not a de Polignac number, because 12121031200203 - 2⁹ = 12121031199691 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12121031200703) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17642025 + ... + 18316197.

It is an arithmetic number, because the mean of its divisors is an integer number (299131003800).

Almost surely, 2^{12121031200203} is an apocalyptic number.

12121031200203 is a deficient number, since it is larger than the sum of its proper divisors (7023353042997).

12121031200203 is a wasteful number, since it uses less digits than its factorization.

12121031200203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674649 (or 674643 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12121031200203 its reverse (30200213012121), we get a palindrome (42321244212324).

It can be divided in two parts, 1212103 and 1200203, that added together give a triangular number (2412306 = T₂₁₉₆).

The spelling of 12121031200203 in words is "twelve trillion, one hundred twenty-one billion, thirty-one million, two hundred thousand, two hundred three".