202002012100020 has 96 divisors (see below), whose sum is σ = 618772272854400. Its totient is φ = 48831458959360.

The previous prime is 202002012099971. The next prime is 202002012100027. The reversal of 202002012100020 is 20001210200202.

202002012100020 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 202002012099969 and 202002012100005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202002012100027) 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, 433284945 + ... + 433750904.

It is an arithmetic number, because the mean of its divisors is an integer number (6445544508900).

Almost surely, 2^{202002012100020} is an apocalyptic number.

202002012100020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202002012100020 is an abundant number, since it is smaller than the sum of its proper divisors (416770260754380).

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

202002012100020 is a wasteful number, since it uses less digits than its factorization.

202002012100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867036225 (or 867036223 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 202002012100020 its reverse (20001210200202), we get a palindrome (222003222300222).

The spelling of 202002012100020 in words is "two hundred two trillion, two billion, twelve million, one hundred thousand, twenty".