212101110012020 has 48 divisors (see below), whose sum is σ = 471645323302608. Its totient is φ = 79844366469120.

The previous prime is 212101110012017. The next prime is 212101110012079. The reversal of 212101110012020 is 20210011101212.

It can be written as a sum of positive squares in 8 ways, for example, as 193871134864 + 211907238877156 = 440308^2 + 14557034^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212101110011986 and 212101110012004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16362107 + ... + 26304386.

It is an arithmetic number, because the mean of its divisors is an integer number (9825944235471).

Almost surely, 2^{212101110012020} is an apocalyptic number.

212101110012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212101110012020 is an abundant number, since it is smaller than the sum of its proper divisors (259544213290588).

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

212101110012020 is a wasteful number, since it uses less digits than its factorization.

212101110012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42681140 (or 42681138 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 212101110012020 its reverse (20210011101212), we get a palindrome (232311121113232).

The spelling of 212101110012020 in words is "two hundred twelve trillion, one hundred one billion, one hundred ten million, twelve thousand, twenty".