211101102020020 has 12 divisors (see below), whose sum is σ = 443312314242084. Its totient is φ = 84440440808000.

The previous prime is 211101102019999. The next prime is 211101102020101. The reversal of 211101102020020 is 20020201101112.

It can be written as a sum of positive squares in 2 ways, for example, as 141697740386596 + 69403361633424 = 11903686^2 + 8330868^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5277527550481 + ... + 5277527550520.

It is an arithmetic number, because the mean of its divisors is an integer number (36942692853507).

Almost surely, 2^{211101102020020} is an apocalyptic number.

211101102020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211101102020020 is an abundant number, since it is smaller than the sum of its proper divisors (232211212222064).

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

211101102020020 is a wasteful number, since it uses less digits than its factorization.

211101102020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555055101010 (or 10555055101008 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 211101102020020 its reverse (20020201101112), we get a palindrome (231121303121132).

The spelling of 211101102020020 in words is "two hundred eleven trillion, one hundred one billion, one hundred two million, twenty thousand, twenty".