11211011101020 has 48 divisors (see below), whose sum is σ = 31983110923680. Its totient is φ = 2933195356416.

The previous prime is 11211011101001. The next prime is 11211011101061. The reversal of 11211011101020 is 2010111011211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11211011100987 and 11211011101005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1762734415 + ... + 1762740774.

It is an arithmetic number, because the mean of its divisors is an integer number (666314810910).

Almost surely, 2^{11211011101020} is an apocalyptic number.

11211011101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11211011101020 is an abundant number, since it is smaller than the sum of its proper divisors (20772099822660).

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

11211011101020 is a wasteful number, since it uses less digits than its factorization.

11211011101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525475254 (or 3525475252 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11211011101020 its reverse (2010111011211), we get a palindrome (13221122112231).

The spelling of 11211011101020 in words is "eleven trillion, two hundred eleven billion, eleven million, one hundred one thousand, twenty".