20110100211020 has 24 divisors (see below), whose sum is σ = 42231783699168. Its totient is φ = 8043930892800.

The previous prime is 20110100210983. The next prime is 20110100211037. The reversal of 20110100211020 is 2011200101102.

It is a super-2 number, since 2×20110100211020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110100210992 and 20110100211010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5306021 + ... + 8268860.

It is an arithmetic number, because the mean of its divisors is an integer number (1759657654132).

Almost surely, 2^{20110100211020} is an apocalyptic number.

20110100211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110100211020 is an abundant number, since it is smaller than the sum of its proper divisors (22121683488148).

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

20110100211020 is a wasteful number, since it uses less digits than its factorization.

20110100211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13648961 (or 13648959 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20110100211020 its reverse (2011200101102), we get a palindrome (22121300312122).

The spelling of 20110100211020 in words is "twenty trillion, one hundred ten billion, one hundred million, two hundred eleven thousand, twenty".