1200111000212 has 12 divisors (see below), whose sum is σ = 2107668253236. Its totient is φ = 597920070720.

The previous prime is 1200111000211. The next prime is 1200111000217. The reversal of 1200111000212 is 2120001110021.

It can be written as a sum of positive squares in 2 ways, for example, as 480576151696 + 719534848516 = 693236^2 + 848254^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1200111000193 and 1200111000202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200111000211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533856083 + ... + 533858330.

It is an arithmetic number, because the mean of its divisors is an integer number (175639021103).

Almost surely, 2^{1200111000212} is an apocalyptic number.

It is an amenable number.

1200111000212 is a deficient number, since it is larger than the sum of its proper divisors (907557253024).

1200111000212 is a wasteful number, since it uses less digits than its factorization.

1200111000212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067714698 (or 1067714696 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1200111000212 its reverse (2120001110021), we get a palindrome (3320112110233).

The spelling of 1200111000212 in words is "one trillion, two hundred billion, one hundred eleven million, two hundred twelve", and thus it is an aban number.