1203012101 has 2 divisors, whose sum is σ = 1203012102. Its totient is φ = 1203012100.

The previous prime is 1203012067. The next prime is 1203012137. The reversal of 1203012101 is 1012103021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 939729025 + 263283076 = 30655^2 + 16226^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203012101 - 2¹⁰ = 1203011077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203012901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601506050 + 601506051.

It is an arithmetic number, because the mean of its divisors is an integer number (601506051).

Almost surely, 2^1203012101 is an apocalyptic number.

It is an amenable number.

1203012101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203012101 is an equidigital number, since it uses as much as digits as its factorization.

1203012101 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 11.

The square root of 1203012101 is about 34684.4648365807. The cubic root of 1203012101 is about 1063.5469471119.

Adding to 1203012101 its reverse (1012103021), we get a palindrome (2215115122).

The spelling of 1203012101 in words is "one billion, two hundred three million, twelve thousand, one hundred one".