1012111121212 has 12 divisors (see below), whose sum is σ = 1781800418160. Its totient is φ = 503025287456.

The previous prime is 1012111121167. The next prime is 1012111121213. The reversal of 1012111121212 is 2121211112101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012111121213) 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, 757567537 + ... + 757568872.

It is an arithmetic number, because the mean of its divisors is an integer number (148483368180).

Almost surely, 2^{1012111121212} is an apocalyptic number.

It is an amenable number.

1012111121212 is a deficient number, since it is larger than the sum of its proper divisors (769689296948).

1012111121212 is a wasteful number, since it uses less digits than its factorization.

1012111121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1515136580 (or 1515136578 counting only the distinct ones).

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

Adding to 1012111121212 its reverse (2121211112101), we get a palindrome (3133322233313).

The spelling of 1012111121212 in words is "one trillion, twelve billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twelve".