1220100109999 has 2 divisors, whose sum is σ = 1220100110000. Its totient is φ = 1220100109998.

The previous prime is 1220100109937. The next prime is 1220100110017. The reversal of 1220100109999 is 9999010010221.

It is a strong prime.

It is an emirp because it is prime and its reverse (9999010010221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220100109999 - 2¹³ = 1220100101807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220100109099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610050054999 + 610050055000.

It is an arithmetic number, because the mean of its divisors is an integer number (610050055000).

Almost surely, 2^{1220100109999} is an apocalyptic number.

1220100109999 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220100109999 is an equidigital number, since it uses as much as digits as its factorization.

1220100109999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 43.

The spelling of 1220100109999 in words is "one trillion, two hundred twenty billion, one hundred million, one hundred nine thousand, nine hundred ninety-nine".