1011121232112 has 60 divisors (see below), whose sum is σ = 2996190128880. Its totient is φ = 317214503424.

The previous prime is 1011121232089. The next prime is 1011121232117. The reversal of 1011121232112 is 2112321211101.

It is a happy number.

1011121232112 is a `hidden beast` number, since 10 + 111 + 212 + 321 + 12 = 666.

It is a super-2 number, since 2×1011121232112² (a number of 25 digits) contains 22 as substring.

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 (1011121232117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 206517412 + ... + 206522307.

It is an arithmetic number, because the mean of its divisors is an integer number (49936502148).

Almost surely, 2^{1011121232112} is an apocalyptic number.

1011121232112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011121232112 is an abundant number, since it is smaller than the sum of its proper divisors (1985068896768).

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

1011121232112 is a wasteful number, since it uses less digits than its factorization.

1011121232112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413039750 (or 413039741 counting only the distinct ones).

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

Adding to 1011121232112 its reverse (2112321211101), we get a palindrome (3123442443213).

The spelling of 1011121232112 in words is "one trillion, eleven billion, one hundred twenty-one million, two hundred thirty-two thousand, one hundred twelve".