202111202120020 has 48 divisors (see below), whose sum is σ = 440395006076928. Its totient is φ = 77831223367680.

The previous prime is 202111202119997. The next prime is 202111202120041. The reversal of 202111202120020 is 20021202111202.

It is a happy number.

202111202120020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×202111202120020³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 202111202119976 and 202111202120003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 844403164 + ... + 844642483.

It is an arithmetic number, because the mean of its divisors is an integer number (9174895959936).

Almost surely, 2^{202111202120020} is an apocalyptic number.

202111202120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202111202120020 is an abundant number, since it is smaller than the sum of its proper divisors (238283803956908).

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

202111202120020 is a wasteful number, since it uses less digits than its factorization.

202111202120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1689045880 (or 1689045878 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202111202120020 its reverse (20021202111202), we get a palindrome (222132404231222).

The spelling of 202111202120020 in words is "two hundred two trillion, one hundred eleven billion, two hundred two million, one hundred twenty thousand, twenty".