1213013102111 has 4 divisors (see below), whose sum is σ = 1219789711800. Its totient is φ = 1206236492424.

The previous prime is 1213013102099. The next prime is 1213013102141. The reversal of 1213013102111 is 1112013103121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213013102111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1213013102111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213013102141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3388304576 + ... + 3388304933.

It is an arithmetic number, because the mean of its divisors is an integer number (304947427950).

Almost surely, 2^{1213013102111} is an apocalyptic number.

1213013102111 is a deficient number, since it is larger than the sum of its proper divisors (6776609689).

1213013102111 is an equidigital number, since it uses as much as digits as its factorization.

1213013102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6776609688.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1213013102111 its reverse (1112013103121), we get a palindrome (2325026205232).

The spelling of 1213013102111 in words is "one trillion, two hundred thirteen billion, thirteen million, one hundred two thousand, one hundred eleven".