1213111011101 has 8 divisors (see below), whose sum is σ = 1324927321344. Its totient is φ = 1101550282720.

The previous prime is 1213111011089. The next prime is 1213111011103. The reversal of 1213111011101 is 1011101113121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213111011101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213111011103) 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 7 ways as a sum of consecutive naturals, for example, 63885536 + ... + 63904521.

It is an arithmetic number, because the mean of its divisors is an integer number (165615915168).

Almost surely, 2^{1213111011101} is an apocalyptic number.

1213111011101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1213111011101 is a deficient number, since it is larger than the sum of its proper divisors (111816310243).

1213111011101 is a wasteful number, since it uses less digits than its factorization.

1213111011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127790931.

The product of its (nonzero) digits is 6, while the sum is 14.

Adding to 1213111011101 its reverse (1011101113121), we get a palindrome (2224212124222).

The spelling of 1213111011101 in words is "one trillion, two hundred thirteen billion, one hundred eleven million, eleven thousand, one hundred one".