1012211031200 has 144 divisors (see below), whose sum is σ = 2621602206720. Its totient is φ = 380553707520.

The previous prime is 1012211031163. The next prime is 1012211031211. The reversal of 1012211031200 is 21301122101.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1668224 + ... + 2192576.

It is an arithmetic number, because the mean of its divisors is an integer number (18205570880).

Almost surely, 2^{1012211031200} is an apocalyptic number.

1012211031200 is a gapful number since it is divisible by the number (10) 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 1012211031200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310801103360).

1012211031200 is an abundant number, since it is smaller than the sum of its proper divisors (1609391175520).

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

1012211031200 is a wasteful number, since it uses less digits than its factorization.

1012211031200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524519 (or 524506 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 1012211031200 its reverse (21301122101), we get a palindrome (1033512153301).

Subtracting from 1012211031200 its reverse (21301122101), we obtain a palindrome (990909909099).

The spelling of 1012211031200 in words is "one trillion, twelve billion, two hundred eleven million, thirty-one thousand, two hundred".