1213434100111 has 16 divisors (see below), whose sum is σ = 1257541639200. Its totient is φ = 1170116035200.

The previous prime is 1213434100049. The next prime is 1213434100171. The reversal of 1213434100111 is 1110014343121.

It is a cyclic number.

It is not a de Polignac number, because 1213434100111 - 2²³ = 1213425711503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213434100171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1115421 + ... + 1915993.

It is an arithmetic number, because the mean of its divisors is an integer number (78596352450).

Almost surely, 2^{1213434100111} is an apocalyptic number.

1213434100111 is a deficient number, since it is larger than the sum of its proper divisors (44107539089).

1213434100111 is a wasteful number, since it uses less digits than its factorization.

1213434100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801066.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 1213434100111 its reverse (1110014343121), we get a palindrome (2323448443232).

The spelling of 1213434100111 in words is "one trillion, two hundred thirteen billion, four hundred thirty-four million, one hundred thousand, one hundred eleven".