202011210012020 has 96 divisors (see below), whose sum is σ = 434952755748000. Its totient is φ = 78764309872640.

The previous prime is 202011210011977. The next prime is 202011210012023. The reversal of 202011210012020 is 20210012110202.

It can be written as a sum of positive squares in 16 ways, for example, as 64237467869584 + 137773742142436 = 8014828^2 + 11737706^2 .

It is a junction number, because it is equal to n+sod(n) for n = 202011210011986 and 202011210012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202011210012023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12826915106 + ... + 12826930854.

It is an arithmetic number, because the mean of its divisors is an integer number (4530757872375).

Almost surely, 2^{202011210012020} is an apocalyptic number.

202011210012020 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 202011210012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217476377874000).

202011210012020 is an abundant number, since it is smaller than the sum of its proper divisors (232941545735980).

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

202011210012020 is a wasteful number, since it uses less digits than its factorization.

202011210012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28565 (or 28563 counting only the distinct ones).

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

Adding to 202011210012020 its reverse (20210012110202), we get a palindrome (222221222122222).

The spelling of 202011210012020 in words is "two hundred two trillion, eleven billion, two hundred ten million, twelve thousand, twenty".