1031211332112 has 80 divisors (see below), whose sum is σ = 2871121111488. Its totient is φ = 317048240640.

The previous prime is 1031211332101. The next prime is 1031211332143. The reversal of 1031211332112 is 2112331121301.

It is a super-3 number, since 3×1031211332112³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156562 + ... + 1444622.

Almost surely, 2^{1031211332112} is an apocalyptic number.

1031211332112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031211332112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1435560555744).

1031211332112 is an abundant number, since it is smaller than the sum of its proper divisors (1839909779376).

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

1031211332112 is a wasteful number, since it uses less digits than its factorization.

1031211332112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289368 (or 1289362 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1031211332112 its reverse (2112331121301), we get a palindrome (3143542453413).

The spelling of 1031211332112 in words is "one trillion, thirty-one billion, two hundred eleven million, three hundred thirty-two thousand, one hundred twelve".