1212012032111 has 4 divisors (see below), whose sum is σ = 1212281792232. Its totient is φ = 1211742271992.

The previous prime is 1212012032047. The next prime is 1212012032149. The reversal of 1212012032111 is 1112302102121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1212012032111 - 2⁶ = 1212012032047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212012032111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212012032311) 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, 134873321 + ... + 134882306.

It is an arithmetic number, because the mean of its divisors is an integer number (303070448058).

Almost surely, 2^{1212012032111} is an apocalyptic number.

1212012032111 is a deficient number, since it is larger than the sum of its proper divisors (269760121).

1212012032111 is an equidigital number, since it uses as much as digits as its factorization.

1212012032111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269760120.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1212012032111 its reverse (1112302102121), we get a palindrome (2324314134232).

The spelling of 1212012032111 in words is "one trillion, two hundred twelve billion, twelve million, thirty-two thousand, one hundred eleven".