1213000122012 has 48 divisors (see below), whose sum is σ = 3240412530432. Its totient is φ = 345955870080.

The previous prime is 1213000121999. The next prime is 1213000122079. The reversal of 1213000122012 is 2102210003121.

It is a super-2 number, since 2×1213000122012² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1213000121982 and 1213000122000.

It is a congruent number.

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, 12777289 + ... + 12871872.

It is an arithmetic number, because the mean of its divisors is an integer number (67508594384).

Almost surely, 2^{1213000122012} is an apocalyptic number.

1213000122012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213000122012 is an abundant number, since it is smaller than the sum of its proper divisors (2027412408420).

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

1213000122012 is a wasteful number, since it uses less digits than its factorization.

1213000122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25649738 (or 25649736 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1213000122012 its reverse (2102210003121), we get a palindrome (3315210125133).

The spelling of 1213000122012 in words is "one trillion, two hundred thirteen billion, one hundred twenty-two thousand, twelve".