210021012210020 has 48 divisors (see below), whose sum is σ = 481259302868736. Its totient is φ = 76352188800000.

The previous prime is 210021012210013. The next prime is 210021012210029. The reversal of 210021012210020 is 20012210120012.

It is a junction number, because it is equal to n+sod(n) for n = 210021012209977 and 210021012210004.

It is not an unprimeable number, because it can be changed into a prime (210021012210029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118420076 + ... + 120180515.

It is an arithmetic number, because the mean of its divisors is an integer number (10026235476432).

Almost surely, 2^{210021012210020} is an apocalyptic number.

210021012210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210021012210020 is an abundant number, since it is smaller than the sum of its proper divisors (271238290658716).

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

210021012210020 is a wasteful number, since it uses less digits than its factorization.

210021012210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238604612 (or 238604610 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210021012210020 its reverse (20012210120012), we get a palindrome (230033222330032).

The spelling of 210021012210020 in words is "two hundred ten trillion, twenty-one billion, twelve million, two hundred ten thousand, twenty".