210210020220020 has 72 divisors (see below), whose sum is σ = 468941544566880. Its totient is φ = 79136893555200.

The previous prime is 210210020220007. The next prime is 210210020220077. The reversal of 210210020220020 is 20022020012012.

It is a junction number, because it is equal to n+sod(n) for n = 210210020219977 and 210210020220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 590879195 + ... + 591234845.

Almost surely, 2^{210210020220020} is an apocalyptic number.

210210020220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210210020220020 is an abundant number, since it is smaller than the sum of its proper divisors (258731524346860).

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

210210020220020 is a wasteful number, since it uses less digits than its factorization.

210210020220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457953 (or 457934 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 210210020220020 its reverse (20022020012012), we get a palindrome (230232040232032).

The spelling of 210210020220020 in words is "two hundred ten trillion, two hundred ten billion, twenty million, two hundred twenty thousand, twenty".