101201212020 has 96 divisors (see below), whose sum is σ = 303333004800. Its totient is φ = 25133272704.

The previous prime is 101201212009. The next prime is 101201212027. The reversal of 101201212020 is 20212102101.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 101201211987 and 101201212005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101201212027) 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 31 ways as a sum of consecutive naturals, for example, 685054 + ... + 819573.

It is an arithmetic number, because the mean of its divisors is an integer number (3159718800).

Almost surely, 2^101201212020 is an apocalyptic number.

101201212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101201212020 is an abundant number, since it is smaller than the sum of its proper divisors (202131792780).

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

101201212020 is a wasteful number, since it uses less digits than its factorization.

101201212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504717 (or 1504715 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 101201212020 its reverse (20212102101), we get a palindrome (121413314121).

The spelling of 101201212020 in words is "one hundred one billion, two hundred one million, two hundred twelve thousand, twenty".