212310210121020 has 144 divisors (see below), whose sum is σ = 702560965317120. Its totient is φ = 51468615907200.

The previous prime is 212310210120881. The next prime is 212310210121063. The reversal of 212310210121020 is 20121012013212.

212310210121020 is a `hidden beast` number, since 2 + 1 + 2 + 310 + 210 + 121 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 212310210120984 and 212310210121002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 214595841 + ... + 215582919.

It is an arithmetic number, because the mean of its divisors is an integer number (4878895592480).

Almost surely, 2^{212310210121020} is an apocalyptic number.

212310210121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212310210121020 is an abundant number, since it is smaller than the sum of its proper divisors (490250755196100).

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

212310210121020 is a wasteful number, since it uses less digits than its factorization.

212310210121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095736 (or 1095731 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 212310210121020 its reverse (20121012013212), we get a palindrome (232431222134232).

The spelling of 212310210121020 in words is "two hundred twelve trillion, three hundred ten billion, two hundred ten million, one hundred twenty-one thousand, twenty".