1011220312312 has 32 divisors (see below), whose sum is σ = 2169856965600. Its totient is φ = 432788874624.

The previous prime is 1011220312279. The next prime is 1011220312321. The reversal of 1011220312312 is 2132130221101.

It is a self number, because there is not a number n which added to its sum of digits gives 1011220312312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12276487 + ... + 12358582.

It is an arithmetic number, because the mean of its divisors is an integer number (67808030175).

Almost surely, 2^{1011220312312} is an apocalyptic number.

It is an amenable number.

1011220312312 is an abundant number, since it is smaller than the sum of its proper divisors (1158636653288).

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

1011220312312 is a wasteful number, since it uses less digits than its factorization.

1011220312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24635815 (or 24635811 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1011220312312 its reverse (2132130221101), we get a palindrome (3143350533413).

The spelling of 1011220312312 in words is "one trillion, eleven billion, two hundred twenty million, three hundred twelve thousand, three hundred twelve".