101220220111111 has 16 divisors (see below), whose sum is σ = 105446172494080. Its totient is φ = 97054354275840.

The previous prime is 101220220111103. The next prime is 101220220111139. The reversal of 101220220111111 is 111111022022101.

It is a cyclic number.

It is not a de Polignac number, because 101220220111111 - 2³ = 101220220111103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220220171111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176222095 + ... + 176795551.

It is an arithmetic number, because the mean of its divisors is an integer number (6590385780880).

Almost surely, 2^{101220220111111} is an apocalyptic number.

101220220111111 is a deficient number, since it is larger than the sum of its proper divisors (4225952382969).

101220220111111 is a wasteful number, since it uses less digits than its factorization.

101220220111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625834.

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

Adding to 101220220111111 its reverse (111111022022101), we get a palindrome (212331242133212).

The spelling of 101220220111111 in words is "one hundred one trillion, two hundred twenty billion, two hundred twenty million, one hundred eleven thousand, one hundred eleven".