11001121012020 has 24 divisors (see below), whose sum is σ = 30803138833824. Its totient is φ = 2933632269856.

The previous prime is 11001121012009. The next prime is 11001121012103. The reversal of 11001121012020 is 2021012110011.

It is a super-2 number, since 2×11001121012020² (a number of 27 digits) contains 22 as substring.

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 = 11001121011987 and 11001121012005.

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, 91676008374 + ... + 91676008493.

It is an arithmetic number, because the mean of its divisors is an integer number (1283464118076).

Almost surely, 2^{11001121012020} is an apocalyptic number.

11001121012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001121012020 is an abundant number, since it is smaller than the sum of its proper divisors (19802017821804).

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

11001121012020 is a wasteful number, since it uses less digits than its factorization.

11001121012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183352016879 (or 183352016877 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11001121012020 its reverse (2021012110011), we get a palindrome (13022133122031).

The spelling of 11001121012020 in words is "eleven trillion, one billion, one hundred twenty-one million, twelve thousand, twenty".