1213010331101 has 2 divisors, whose sum is σ = 1213010331102. Its totient is φ = 1213010331100.

The previous prime is 1213010331077. The next prime is 1213010331131. The reversal of 1213010331101 is 1011330103121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1200229802500 + 12780528601 = 1095550^2 + 113051^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213010331101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213010331101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213010331131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606505165550 + 606505165551.

It is an arithmetic number, because the mean of its divisors is an integer number (606505165551).

Almost surely, 2^{1213010331101} is an apocalyptic number.

It is an amenable number.

1213010331101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213010331101 is an equidigital number, since it uses as much as digits as its factorization.

1213010331101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1213010331101 its reverse (1011330103121), we get a palindrome (2224340434222).

The spelling of 1213010331101 in words is "one trillion, two hundred thirteen billion, ten million, three hundred thirty-one thousand, one hundred one".