1111212101212 has 48 divisors (see below), whose sum is σ = 2027889319680. Its totient is φ = 532185408000.

The previous prime is 1111212101177. The next prime is 1111212101221. The reversal of 1111212101212 is 2121012121111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43432968 + ... + 43458544.

It is an arithmetic number, because the mean of its divisors is an integer number (42247694160).

Almost surely, 2^{1111212101212} is an apocalyptic number.

It is an amenable number.

1111212101212 is a deficient number, since it is larger than the sum of its proper divisors (916677218468).

1111212101212 is a wasteful number, since it uses less digits than its factorization.

1111212101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29182 (or 29180 counting only the distinct ones).

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

Adding to 1111212101212 its reverse (2121012121111), we get a palindrome (3232224222323).

It can be divided in two parts, 1111 and 212101212, that multiplied together give a palindrome (235644446532).

The spelling of 1111212101212 in words is "one trillion, one hundred eleven billion, two hundred twelve million, one hundred one thousand, two hundred twelve".