101101220020 has 12 divisors (see below), whose sum is σ = 212312562084. Its totient is φ = 40440488000.

The previous prime is 101101219997. The next prime is 101101220027. The reversal of 101101220020 is 20022101101.

It can be written as a sum of positive squares in 2 ways, for example, as 61609196944 + 39492023076 = 248212^2 + 198726^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 101101219979 and 101101220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101101220027) 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, 2527530481 + ... + 2527530520.

It is an arithmetic number, because the mean of its divisors is an integer number (17692713507).

Almost surely, 2^101101220020 is an apocalyptic number.

101101220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101101220020 is an abundant number, since it is smaller than the sum of its proper divisors (111211342064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

101101220020 is a wasteful number, since it uses less digits than its factorization.

101101220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055061010 (or 5055061008 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 101101220020 its reverse (20022101101), we get a palindrome (121123321121).

The spelling of 101101220020 in words is "one hundred one billion, one hundred one million, two hundred twenty thousand, twenty".