101212020020 has 48 divisors (see below), whose sum is σ = 213662449728. Its totient is φ = 40272207360.

The previous prime is 101212019989. The next prime is 101212020043. The reversal of 101212020020 is 20020212101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 101212019983 and 101212020010.

It is a congruent number.

It is an unprimeable number.

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, 10194779 + ... + 10204701.

It is an arithmetic number, because the mean of its divisors is an integer number (4451301036).

Almost surely, 2^101212020020 is an apocalyptic number.

101212020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101212020020 is an abundant number, since it is smaller than the sum of its proper divisors (112450429708).

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

101212020020 is a wasteful number, since it uses less digits than its factorization.

101212020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12560 (or 12558 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 101212020020 its reverse (20020212101), we get a palindrome (121232232121).

The spelling of 101212020020 in words is "one hundred one billion, two hundred twelve million, twenty thousand, twenty".