1220022121111 has 2 divisors, whose sum is σ = 1220022121112. Its totient is φ = 1220022121110.

The previous prime is 1220022121099. The next prime is 1220022121217. The reversal of 1220022121111 is 1111212200221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1220022121111 - 2¹³ = 1220022112919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220022121811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610011060555 + 610011060556.

It is an arithmetic number, because the mean of its divisors is an integer number (610011060556).

Almost surely, 2^{1220022121111} is an apocalyptic number.

1220022121111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220022121111 is an equidigital number, since it uses as much as digits as its factorization.

1220022121111 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1220022121111 its reverse (1111212200221), we get a palindrome (2331234321332).

The spelling of 1220022121111 in words is "one trillion, two hundred twenty billion, twenty-two million, one hundred twenty-one thousand, one hundred eleven".