1123111211010 has 64 divisors (see below), whose sum is σ = 2726167933440. Its totient is φ = 296086123520.

The previous prime is 1123111211009. The next prime is 1123111211023. The reversal of 1123111211010 is 101121113211.

It is a super-2 number, since 2×1123111211010² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19817815 + ... + 19874405.

It is an arithmetic number, because the mean of its divisors is an integer number (42596373960).

Almost surely, 2^{1123111211010} is an apocalyptic number.

1123111211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1123111211010 is an abundant number, since it is smaller than the sum of its proper divisors (1603056722430).

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

1123111211010 is a wasteful number, since it uses less digits than its factorization.

1123111211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64123.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 1123111211010 its reverse (101121113211), we get a palindrome (1224232324221).

The spelling of 1123111211010 in words is "one trillion, one hundred twenty-three billion, one hundred eleven million, two hundred eleven thousand, ten".