20210001100120 has 64 divisors (see below), whose sum is σ = 49066596936000. Its totient is φ = 7447493733888.

The previous prime is 20210001100103. The next prime is 20210001100123. The reversal of 20210001100120 is 2100110001202.

It is a super-2 number, since 2×20210001100120² (a number of 27 digits) contains 22 as substring.

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 = 20210001100097 and 20210001100106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20210001100123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37913500 + ... + 38442859.

It is an arithmetic number, because the mean of its divisors is an integer number (766665577125).

Almost surely, 2^{20210001100120} is an apocalyptic number.

20210001100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210001100120 is an abundant number, since it is smaller than the sum of its proper divisors (28856595835880).

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

20210001100120 is a wasteful number, since it uses less digits than its factorization.

20210001100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76356892 (or 76356888 counting only the distinct ones).

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

Adding to 20210001100120 its reverse (2100110001202), we get a palindrome (22310111101322).

The spelling of 20210001100120 in words is "twenty trillion, two hundred ten billion, one million, one hundred thousand, one hundred twenty".