11121201111020 has 144 divisors (see below), whose sum is σ = 31917069884448. Its totient is φ = 3199706173440.

The previous prime is 11121201111017. The next prime is 11121201111089. The reversal of 11121201111020 is 2011110212111.

It is a super-2 number, since 2×11121201111020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 11121201110986 and 11121201111004.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39538757 + ... + 39819036.

It is an arithmetic number, because the mean of its divisors is an integer number (221646318642).

Almost surely, 2^{11121201111020} is an apocalyptic number.

11121201111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121201111020 is an abundant number, since it is smaller than the sum of its proper divisors (20795868773428).

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

11121201111020 is a wasteful number, since it uses less digits than its factorization.

11121201111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79357840 (or 79357831 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11121201111020 its reverse (2011110212111), we get a palindrome (13132311323131).

The spelling of 11121201111020 in words is "eleven trillion, one hundred twenty-one billion, two hundred one million, one hundred eleven thousand, twenty".