1212020022111 has 4 divisors (see below), whose sum is σ = 1616026696152. Its totient is φ = 808013348072.

The previous prime is 1212020022053. The next prime is 1212020022119. The reversal of 1212020022111 is 1112200202121.

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 1212020022111 - 2¹¹ = 1212020020063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212020022119) 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, 202003337016 + ... + 202003337021.

It is an arithmetic number, because the mean of its divisors is an integer number (404006674038).

Almost surely, 2^{1212020022111} is an apocalyptic number.

1212020022111 is a deficient number, since it is larger than the sum of its proper divisors (404006674041).

1212020022111 is an equidigital number, since it uses as much as digits as its factorization.

1212020022111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404006674040.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1212020022111 its reverse (1112200202121), we get a palindrome (2324220224232).

The spelling of 1212020022111 in words is "one trillion, two hundred twelve billion, twenty million, twenty-two thousand, one hundred eleven".