202011100120 has 32 divisors (see below), whose sum is σ = 454818546000. Its totient is φ = 80752249728.

The previous prime is 202011100103. The next prime is 202011100121. The reversal of 202011100120 is 21001110202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 202011100097 and 202011100106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202011100121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1568214 + ... + 1692133.

Almost surely, 2^202011100120 is an apocalyptic number.

202011100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202011100120 is an abundant number, since it is smaller than the sum of its proper divisors (252807445880).

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

202011100120 is a wasteful number, since it uses less digits than its factorization.

202011100120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3261907 (or 3261903 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 202011100120 its reverse (21001110202), we get a palindrome (223012210322).

The spelling of 202011100120 in words is "two hundred two billion, eleven million, one hundred thousand, one hundred twenty".