101111220222101 has 4 divisors (see below), whose sum is σ = 101635112555052. Its totient is φ = 100587327889152.

The previous prime is 101111220222097. The next prime is 101111220222121. The reversal of 101111220222101 is 101222022111101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18139634674225 + 82971585547876 = 4259065^2 + 9108874^2 .

It is a cyclic number.

It is not a de Polignac number, because 101111220222101 - 2² = 101111220222097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 101111220222101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101111220222121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261946166186 + ... + 261946166571.

It is an arithmetic number, because the mean of its divisors is an integer number (25408778138763).

Almost surely, 2^{101111220222101} is an apocalyptic number.

It is an amenable number.

101111220222101 is a deficient number, since it is larger than the sum of its proper divisors (523892332951).

101111220222101 is an equidigital number, since it uses as much as digits as its factorization.

101111220222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523892332950.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101111220222101 its reverse (101222022111101), we get a palindrome (202333242333202).

The spelling of 101111220222101 in words is "one hundred one trillion, one hundred eleven billion, two hundred twenty million, two hundred twenty-two thousand, one hundred one".