1121131012212 has 72 divisors (see below), whose sum is σ = 2838536861160. Its totient is φ = 373108619520.

The previous prime is 1121131012193. The next prime is 1121131012217. The reversal of 1121131012212 is 2122101311211.

It is a happy number.

1121131012212 is a `hidden beast` number, since 11 + 211 + 310 + 122 + 12 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 364919895396 + 756211116816 = 604086^2 + 869604^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121131012217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62065662 + ... + 62083722.

Almost surely, 2^{1121131012212} is an apocalyptic number.

1121131012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121131012212 is an abundant number, since it is smaller than the sum of its proper divisors (1717405848948).

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

1121131012212 is a wasteful number, since it uses less digits than its factorization.

1121131012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20753 (or 20748 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 1121131012212 its reverse (2122101311211), we get a palindrome (3243232323423).

The spelling of 1121131012212 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-one million, twelve thousand, two hundred twelve".