202011100120020 has 96 divisors (see below), whose sum is σ = 567335347278336. Its totient is φ = 53707356188800.

The previous prime is 202011100120019. The next prime is 202011100120043. The reversal of 202011100120020 is 20021001110202.

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 = 202011100119978 and 202011100120005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159495835 + ... + 160757405.

It is an arithmetic number, because the mean of its divisors is an integer number (5909743200816).

Almost surely, 2^{202011100120020} is an apocalyptic number.

202011100120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202011100120020 is an abundant number, since it is smaller than the sum of its proper divisors (365324247158316).

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

202011100120020 is a wasteful number, since it uses less digits than its factorization.

202011100120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269621 (or 1269619 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202011100120020 its reverse (20021001110202), we get a palindrome (222032101230222).

The spelling of 202011100120020 in words is "two hundred two trillion, eleven billion, one hundred million, one hundred twenty thousand, twenty".