11211101210020 has 12 divisors (see below), whose sum is σ = 23543312541084. Its totient is φ = 4484440484000.

The previous prime is 11211101210003. The next prime is 11211101210027. The reversal of 11211101210020 is 2001210111211.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2114459157924 + 9096642052096 = 1454118^2 + 3016064^2 .

It is not an unprimeable number, because it can be changed into a prime (11211101210027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280277530231 + ... + 280277530270.

It is an arithmetic number, because the mean of its divisors is an integer number (1961942711757).

Almost surely, 2^{11211101210020} is an apocalyptic number.

11211101210020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211101210020 is an abundant number, since it is smaller than the sum of its proper divisors (12332211331064).

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

11211101210020 is a wasteful number, since it uses less digits than its factorization.

11211101210020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560555060510 (or 560555060508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11211101210020 its reverse (2001210111211), we get a palindrome (13212311321231).

The spelling of 11211101210020 in words is "eleven trillion, two hundred eleven billion, one hundred one million, two hundred ten thousand, twenty".