101220012101 has 4 divisors (see below), whose sum is σ = 109006166892. Its totient is φ = 93433857312.

The previous prime is 101220012079. The next prime is 101220012107. The reversal of 101220012101 is 101210022101.

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 15807027076 + 85412985025 = 125726^2 + 292255^2 .

It is a cyclic number.

It is not a de Polignac number, because 101220012101 - 2²² = 101215817797 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 (101220012107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3893077376 + ... + 3893077401.

It is an arithmetic number, because the mean of its divisors is an integer number (27251541723).

Almost surely, 2^101220012101 is an apocalyptic number.

It is an amenable number.

101220012101 is a deficient number, since it is larger than the sum of its proper divisors (7786154791).

101220012101 is an equidigital number, since it uses as much as digits as its factorization.

101220012101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7786154790.

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

Adding to 101220012101 its reverse (101210022101), we get a palindrome (202430034202).

The spelling of 101220012101 in words is "one hundred one billion, two hundred twenty million, twelve thousand, one hundred one".