1102111121128 has 8 divisors (see below), whose sum is σ = 2066458352130. Its totient is φ = 551055560560.

The previous prime is 1102111121071. The next prime is 1102111121129. The reversal of 1102111121128 is 8211211112011.

It can be written as a sum of positive squares in only one way, i.e., 1082095096644 + 20016024484 = 1040238^2 + 141478^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1102111121099 and 1102111121108.

It is not an unprimeable number, because it can be changed into a prime (1102111121129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68881945063 + ... + 68881945078.

Almost surely, 2^{1102111121128} is an apocalyptic number.

It is an amenable number.

1102111121128 is a deficient number, since it is larger than the sum of its proper divisors (964347231002).

1102111121128 is a wasteful number, since it uses less digits than its factorization.

1102111121128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137763890147 (or 137763890143 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 22.

Adding to 1102111121128 its reverse (8211211112011), we get a palindrome (9313322233139).

The spelling of 1102111121128 in words is "one trillion, one hundred two billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twenty-eight".