1201012100103 has 16 divisors (see below), whose sum is σ = 1602433497600. Its totient is φ = 800132847360.

The previous prime is 1201012100089. The next prime is 1201012100107. The reversal of 1201012100103 is 3010012101021.

It is not a de Polignac number, because 1201012100103 - 2¹³ = 1201012091911 is a prime.

It is a super-2 number, since 2×1201012100103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201012100107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61615383 + ... + 61634871.

It is an arithmetic number, because the mean of its divisors is an integer number (100152093600).

Almost surely, 2^{1201012100103} is an apocalyptic number.

1201012100103 is a deficient number, since it is larger than the sum of its proper divisors (401421397497).

1201012100103 is a wasteful number, since it uses less digits than its factorization.

1201012100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32342.

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

Adding to 1201012100103 its reverse (3010012101021), we get a palindrome (4211024201124).

The spelling of 1201012100103 in words is "one trillion, two hundred one billion, twelve million, one hundred thousand, one hundred three".