1201011021103 has 2 divisors, whose sum is σ = 1201011021104. Its totient is φ = 1201011021102.

The previous prime is 1201011021097. The next prime is 1201011021127. The reversal of 1201011021103 is 3011201101021.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201011021103 - 2⁵ = 1201011021071 is a prime.

It is a super-2 number, since 2×1201011021103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201011021803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600505510551 + 600505510552.

It is an arithmetic number, because the mean of its divisors is an integer number (600505510552).

Almost surely, 2^{1201011021103} is an apocalyptic number.

1201011021103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201011021103 is an equidigital number, since it uses as much as digits as its factorization.

1201011021103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1201011021103 its reverse (3011201101021), we get a palindrome (4212212122124).

The spelling of 1201011021103 in words is "one trillion, two hundred one billion, eleven million, twenty-one thousand, one hundred three".