1220000011211 has 2 divisors, whose sum is σ = 1220000011212. Its totient is φ = 1220000011210.

The previous prime is 1220000011199. The next prime is 1220000011229. The reversal of 1220000011211 is 1121100000221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220000011211 - 2²⁶ = 1219932902347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220000011192 and 1220000011201.

It is not a weakly prime, because it can be changed into another prime (1220090011211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610000005605 + 610000005606.

It is an arithmetic number, because the mean of its divisors is an integer number (610000005606).

Almost surely, 2^{1220000011211} is an apocalyptic number.

1220000011211 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220000011211 is an equidigital number, since it uses as much as digits as its factorization.

1220000011211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1220000011211 its reverse (1121100000221), we get a palindrome (2341100011432).

The spelling of 1220000011211 in words is "one trillion, two hundred twenty billion, eleven thousand, two hundred eleven".