11121010101020 has 24 divisors (see below), whose sum is σ = 23389885590624. Its totient is φ = 4441591777856.

The previous prime is 11121010100983. The next prime is 11121010101037. The reversal of 11121010101020 is 2010101012111.

It is a junction number, because it is equal to n+sod(n) for n = 11121010100992 and 11121010101010.

It is a congruent number.

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, 425753024 + ... + 425779143.

It is an arithmetic number, because the mean of its divisors is an integer number (974578566276).

Almost surely, 2^{11121010101020} is an apocalyptic number.

11121010101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121010101020 is an abundant number, since it is smaller than the sum of its proper divisors (12268875489604).

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

11121010101020 is a wasteful number, since it uses less digits than its factorization.

11121010101020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851532829 (or 851532827 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11121010101020 its reverse (2010101012111), we get a palindrome (13131111113131).

The spelling of 11121010101020 in words is "eleven trillion, one hundred twenty-one billion, ten million, one hundred one thousand, twenty".