1211113100103 has 32 divisors (see below), whose sum is σ = 1632246787776. Its totient is φ = 798746876928.

The previous prime is 1211113100081. The next prime is 1211113100123. The reversal of 1211113100103 is 3010013111121.

It is not a de Polignac number, because 1211113100103 - 2⁹ = 1211113099591 is a prime.

It is a super-2 number, since 2×1211113100103² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211113100123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108390825 + ... + 108401997.

It is an arithmetic number, because the mean of its divisors is an integer number (51007712118).

Almost surely, 2^{1211113100103} is an apocalyptic number.

1211113100103 is a deficient number, since it is larger than the sum of its proper divisors (421133687673).

1211113100103 is a wasteful number, since it uses less digits than its factorization.

1211113100103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12323.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1211113100103 its reverse (3010013111121), we get a palindrome (4221126211224).

The spelling of 1211113100103 in words is "one trillion, two hundred eleven billion, one hundred thirteen million, one hundred thousand, one hundred three".