1121011211012 has 96 divisors (see below), whose sum is σ = 2455629496320. Its totient is φ = 435012145920.

The previous prime is 1121011210999. The next prime is 1121011211017. The reversal of 1121011211012 is 2101121101211.

It is a super-2 number, since 2×1121011211012² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (1121011211017) 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, 157243064 + ... + 157250192.

It is an arithmetic number, because the mean of its divisors is an integer number (25579473920).

Almost surely, 2^{1121011211012} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121011211012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1227814748160).

1121011211012 is an abundant number, since it is smaller than the sum of its proper divisors (1334618285308).

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

1121011211012 is a wasteful number, since it uses less digits than its factorization.

1121011211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9121 (or 9119 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1121011211012 its reverse (2101121101211), we get a palindrome (3222132312223).

It can be divided in two parts, 11 and 21011211012, that multiplied together give a palindrome (231123321132).

The spelling of 1121011211012 in words is "one trillion, one hundred twenty-one billion, eleven million, two hundred eleven thousand, twelve".