1212220000211 has 4 divisors (see below), whose sum is σ = 1322421818424. Its totient is φ = 1102018182000.

The previous prime is 1212220000207. The next prime is 1212220000231. The reversal of 1212220000211 is 1120000222121.

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 1212220000211 - 2² = 1212220000207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1212220000231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55100909090 + ... + 55100909111.

It is an arithmetic number, because the mean of its divisors is an integer number (330605454606).

Almost surely, 2^{1212220000211} is an apocalyptic number.

1212220000211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1212220000211 is a deficient number, since it is larger than the sum of its proper divisors (110201818213).

1212220000211 is a wasteful number, since it uses less digits than its factorization.

1212220000211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110201818212.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1212220000211 its reverse (1120000222121), we get a palindrome (2332220222332).

The spelling of 1212220000211 in words is "one trillion, two hundred twelve billion, two hundred twenty million, two hundred eleven", and thus it is an aban number.