202010322420 has 144 divisors (see below), whose sum is σ = 618314231808. Its totient is φ = 53382551040.

The previous prime is 202010322419. The next prime is 202010322457. The reversal of 202010322420 is 24223010202.

202010322420 is a `hidden beast` number, since 20 + 201 + 0 + 3 + 22 + 420 = 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 = 202010322393 and 202010322402.

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, 21415105 + ... + 21424535.

It is an arithmetic number, because the mean of its divisors is an integer number (4293848832).

Almost surely, 2^202010322420 is an apocalyptic number.

202010322420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202010322420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309157115904).

202010322420 is an abundant number, since it is smaller than the sum of its proper divisors (416303909388).

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

202010322420 is a wasteful number, since it uses less digits than its factorization.

202010322420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10510 (or 10505 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 202010322420 its reverse (24223010202), we get a palindrome (226233332622).

The spelling of 202010322420 in words is "two hundred two billion, ten million, three hundred twenty-two thousand, four hundred twenty".