1101111101010 has 80 divisors (see below), whose sum is σ = 2965897973016. Its totient is φ = 293120612352.

The previous prime is 1101111100949. The next prime is 1101111101021. The reversal of 1101111101010 is 101011111011.

It can be written as a sum of positive squares in 4 ways, for example, as 925584457329 + 175526643681 = 962073^2 + 418959^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1101111100983 and 1101111101001.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 710617 + ... + 1645356.

Almost surely, 2^{1101111101010} is an apocalyptic number.

1101111101010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1101111101010 is an abundant number, since it is smaller than the sum of its proper divisors (1864786872006).

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

1101111101010 is a wasteful number, since it uses less digits than its factorization.

1101111101010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356569 (or 2356560 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 1101111101010 its reverse (101011111011), we get a palindrome (1202122212021).

It can be divided in two parts, 110111 and 1101010, that added together give a palindrome (1211121).

The spelling of 1101111101010 in words is "one trillion, one hundred one billion, one hundred eleven million, one hundred one thousand, ten".