1011212220012 has 24 divisors (see below), whose sum is σ = 2377506597312. Its totient is φ = 334497680400.

The previous prime is 1011212219981. The next prime is 1011212220017. The reversal of 1011212220012 is 2100222121101.

It is a junction number, because it is equal to n+sod(n) for n = 1011212219973 and 1011212220000.

It is not an unprimeable number, because it can be changed into a prime (1011212220017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321630814 + ... + 321633957.

It is an arithmetic number, because the mean of its divisors is an integer number (99062774888).

Almost surely, 2^{1011212220012} is an apocalyptic number.

1011212220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1011212220012 is an abundant number, since it is smaller than the sum of its proper divisors (1366294377300).

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

1011212220012 is a wasteful number, since it uses less digits than its factorization.

1011212220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643264909 (or 643264907 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1011212220012 its reverse (2100222121101), we get a palindrome (3111434341113).

The spelling of 1011212220012 in words is "one trillion, eleven billion, two hundred twelve million, two hundred twenty thousand, twelve".