11001101011020 has 72 divisors (see below), whose sum is σ = 33370486124976. Its totient is φ = 2933584762752.

The previous prime is 11001101011009. The next prime is 11001101011031. The reversal of 11001101011020 is 2011010110011.

It is an interprime number because it is at equal distance from previous prime (11001101011009) and next prime (11001101011031).

It is a super-2 number, since 2×11001101011020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11001101010993 and 11001101011011.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13308114 + ... + 14110566.

It is an arithmetic number, because the mean of its divisors is an integer number (463478973958).

Almost surely, 2^{11001101011020} is an apocalyptic number.

11001101011020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001101011020 is an abundant number, since it is smaller than the sum of its proper divisors (22369385113956).

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

11001101011020 is a wasteful number, since it uses less digits than its factorization.

11001101011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878631 (or 878626 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11001101011020 its reverse (2011010110011), we get a palindrome (13012111121031).

The spelling of 11001101011020 in words is "eleven trillion, one billion, one hundred one million, eleven thousand, twenty".