11101220001020 has 48 divisors (see below), whose sum is σ = 23471927357760. Its totient is φ = 4410186579456.

The previous prime is 11101220000953. The next prime is 11101220001049. The reversal of 11101220001020 is 2010002210111.

It is a super-2 number, since 2×11101220001020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11101220000992 and 11101220001010.

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, 1614041 + ... + 4980719.

It is an arithmetic number, because the mean of its divisors is an integer number (488998486620).

Almost surely, 2^{11101220001020} is an apocalyptic number.

11101220001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101220001020 is an abundant number, since it is smaller than the sum of its proper divisors (12370707356740).

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

11101220001020 is a wasteful number, since it uses less digits than its factorization.

11101220001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3367814 (or 3367812 counting only the distinct ones).

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

Adding to 11101220001020 its reverse (2010002210111), we get a palindrome (13111222211131).

The spelling of 11101220001020 in words is "eleven trillion, one hundred one billion, two hundred twenty million, one thousand, twenty".