1212002222111 has 4 divisors (see below), whose sum is σ = 1212162526224. Its totient is φ = 1211841918000.

The previous prime is 1212002222051. The next prime is 1212002222153. The reversal of 1212002222111 is 1112222002121.

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 1212002222111 - 2¹⁸ = 1212001959967 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 1212002222111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212002822111) 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, 80140715 + ... + 80155836.

It is an arithmetic number, because the mean of its divisors is an integer number (303040631556).

Almost surely, 2^{1212002222111} is an apocalyptic number.

1212002222111 is a deficient number, since it is larger than the sum of its proper divisors (160304113).

1212002222111 is an equidigital number, since it uses as much as digits as its factorization.

1212002222111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160304112.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212002222111 its reverse (1112222002121), we get a palindrome (2324224224232).

The spelling of 1212002222111 in words is "one trillion, two hundred twelve billion, two million, two hundred twenty-two thousand, one hundred eleven".