101220010101 has 16 divisors (see below), whose sum is σ = 171377795200. Its totient is φ = 57840005664.

The previous prime is 101220010049. The next prime is 101220010103. The reversal of 101220010101 is 101010022101.

It is a happy number.

It is not a de Polignac number, because 101220010101 - 2⁶ = 101220010037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101220010103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267777616 + ... + 267777993.

It is an arithmetic number, because the mean of its divisors is an integer number (10711112200).

Almost surely, 2^101220010101 is an apocalyptic number.

It is an amenable number.

101220010101 is a deficient number, since it is larger than the sum of its proper divisors (70157785099).

101220010101 is an equidigital number, since it uses as much as digits as its factorization.

101220010101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535555625 (or 535555619 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101220010101 its reverse (101010022101), we get a palindrome (202230032202).

The spelling of 101220010101 in words is "one hundred one billion, two hundred twenty million, ten thousand, one hundred one".