1011121212132 has 36 divisors (see below), whose sum is σ = 2570663675580. Its totient is φ = 335092191552.

The previous prime is 1011121212109. The next prime is 1011121212133. The reversal of 1011121212132 is 2312121211101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 901709773056 + 109411439076 = 949584^2 + 330774^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1011121212132² (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 not an unprimeable number, because it can be changed into a prime (1011121212133) 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, 81169207 + ... + 81181662.

Almost surely, 2^{1011121212132} is an apocalyptic number.

1011121212132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011121212132 is an abundant number, since it is smaller than the sum of its proper divisors (1559542463448).

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

1011121212132 is a wasteful number, since it uses less digits than its factorization.

1011121212132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162351052 (or 162351047 counting only the distinct ones).

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

Adding to 1011121212132 its reverse (2312121211101), we get a palindrome (3323242423233).

The spelling of 1011121212132 in words is "one trillion, eleven billion, one hundred twenty-one million, two hundred twelve thousand, one hundred thirty-two".