1011012211312 has 20 divisors (see below), whose sum is σ = 1983631556320. Its totient is φ = 499107293568.

The previous prime is 1011012211303. The next prime is 1011012211327. The reversal of 1011012211312 is 2131122101101.

It is a happy number.

It is a super-2 number, since 2×1011012211312² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399924453 + ... + 399926980.

It is an arithmetic number, because the mean of its divisors is an integer number (99181577816).

Almost surely, 2^{1011012211312} is an apocalyptic number.

It is an amenable number.

1011012211312 is a deficient number, since it is larger than the sum of its proper divisors (972619345008).

1011012211312 is an equidigital number, since it uses as much as digits as its factorization.

1011012211312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799851520 (or 799851514 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1011012211312 its reverse (2131122101101), we get a palindrome (3142134312413).

The spelling of 1011012211312 in words is "one trillion, eleven billion, twelve million, two hundred eleven thousand, three hundred twelve".