121001203 has 2 divisors, whose sum is σ = 121001204. Its totient is φ = 121001202.

The previous prime is 121001197. The next prime is 121001213. The reversal of 121001203 is 302100121.

It is an a-pointer prime, because the next prime (121001213) can be obtained adding 121001203 to its sum of digits (10).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121001203 - 2²⁵ = 87446771 is a prime.

It is a super-2 number, since 2×121001203² = 29282582254894418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121001203.

It is not a weakly prime, because it can be changed into another prime (121001213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500601 + 60500602.

It is an arithmetic number, because the mean of its divisors is an integer number (60500602).

Almost surely, 2^121001203 is an apocalyptic number.

121001203 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001203 is an equidigital number, since it uses as much as digits as its factorization.

121001203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 121001203 is about 11000.0546816823. The cubic root of 121001203 is about 494.6103834773.

Adding to 121001203 its reverse (302100121), we get a palindrome (423101324).

The spelling of 121001203 in words is "one hundred twenty-one million, one thousand, two hundred three".