1121211111104 has 56 divisors (see below), whose sum is σ = 2567433593088. Its totient is φ = 475853794560.

The previous prime is 1121211111091. The next prime is 1121211111149. The reversal of 1121211111104 is 4011111121211.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-2 number, since 2×1121211111104² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12102902 + ... + 12195189.

It is an arithmetic number, because the mean of its divisors is an integer number (45847028448).

Almost surely, 2^{1121211111104} is an apocalyptic number.

1121211111104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1121211111104 is an abundant number, since it is smaller than the sum of its proper divisors (1446222481984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121211111104 is a wasteful number, since it uses less digits than its factorization.

1121211111104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24298213 (or 24298203 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 1121211111104 its reverse (4011111121211), we get a palindrome (5132322232315).

The spelling of 1121211111104 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, one hundred eleven thousand, one hundred four".