121012312030203 has 32 divisors (see below), whose sum is σ = 176104361422080. Its totient is φ = 73304781096960.

The previous prime is 121012312030189. The next prime is 121012312030213. The reversal of 121012312030203 is 302030213210121.

It is not a de Polignac number, because 121012312030203 - 2⁹ = 121012312029691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121012312030203.

It is not an unprimeable number, because it can be changed into a prime (121012312030213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 633181683 + ... + 633372771.

It is an arithmetic number, because the mean of its divisors is an integer number (5503261294440).

Almost surely, 2^{121012312030203} is an apocalyptic number.

121012312030203 is a deficient number, since it is larger than the sum of its proper divisors (55092049391877).

121012312030203 is a wasteful number, since it uses less digits than its factorization.

121012312030203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200427.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 121012312030203 its reverse (302030213210121), we get a palindrome (423042525240324).

The spelling of 121012312030203 in words is "one hundred twenty-one trillion, twelve billion, three hundred twelve million, thirty thousand, two hundred three".