1212200122111 has 8 divisors (see below), whose sum is σ = 1322413006464. Its totient is φ = 1101989383320.

The previous prime is 1212200122087. The next prime is 1212200122169. The reversal of 1212200122111 is 1112210022121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212200122111 - 2¹¹ = 1212200120063 is a prime.

It is a super-2 number, since 2×1212200122111² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212200123111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 786886 + ... + 1744588.

It is an arithmetic number, because the mean of its divisors is an integer number (165301625808).

Almost surely, 2^{1212200122111} is an apocalyptic number.

1212200122111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212200122111 is a deficient number, since it is larger than the sum of its proper divisors (110212884353).

1212200122111 is a wasteful number, since it uses less digits than its factorization.

1212200122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1072781.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212200122111 its reverse (1112210022121), we get a palindrome (2324410144232).

The spelling of 1212200122111 in words is "one trillion, two hundred twelve billion, two hundred million, one hundred twenty-two thousand, one hundred eleven".