20100200110020 has 72 divisors (see below), whose sum is σ = 61037829775104. Its totient is φ = 5354143668288.

The previous prime is 20100200110019. The next prime is 20100200110027. The reversal of 20100200110020 is 2001100200102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20100200109984 and 20100200110011.

It is not an unprimeable number, because it can be changed into a prime (20100200110027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61395604 + ... + 61722123.

Almost surely, 2^{20100200110020} is an apocalyptic number.

20100200110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20100200110020 is an abundant number, since it is smaller than the sum of its proper divisors (40937629665084).

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

20100200110020 is a wasteful number, since it uses less digits than its factorization.

20100200110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123118649 (or 123118644 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20100200110020 its reverse (2001100200102), we get a palindrome (22101300310122).

The spelling of 20100200110020 in words is "twenty trillion, one hundred billion, two hundred million, one hundred ten thousand, twenty".