1101001210381 has 2 divisors, whose sum is σ = 1101001210382. Its totient is φ = 1101001210380.

The previous prime is 1101001210369. The next prime is 1101001210417. The reversal of 1101001210381 is 1830121001011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1093977932356 + 7023278025 = 1045934^2 + 83805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1101001210381 is a prime.

It is a super-2 number, since 2×1101001210381² (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 (1101001210321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550500605190 + 550500605191.

It is an arithmetic number, because the mean of its divisors is an integer number (550500605191).

Almost surely, 2^{1101001210381} is an apocalyptic number.

It is an amenable number.

1101001210381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1101001210381 is an equidigital number, since it uses as much as digits as its factorization.

1101001210381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 1101001210381 its reverse (1830121001011), we get a palindrome (2931122211392).

The spelling of 1101001210381 in words is "one trillion, one hundred one billion, one million, two hundred ten thousand, three hundred eighty-one".