1101303213021 has 24 divisors (see below), whose sum is σ = 1738044543456. Its totient is φ = 666434315040.

The previous prime is 1101303213001. The next prime is 1101303213067. The reversal of 1101303213021 is 1203123031011.

1101303213021 is a `hidden beast` number, since 1 + 10 + 1 + 30 + 321 + 302 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-1101303213021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101303212985 and 1101303213003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101303213001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8453175 + ... + 8582468.

It is an arithmetic number, because the mean of its divisors is an integer number (72418522644).

Almost surely, 2^{1101303213021} is an apocalyptic number.

1101303213021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101303213021 is a deficient number, since it is larger than the sum of its proper divisors (636741330435).

1101303213021 is a wasteful number, since it uses less digits than its factorization.

1101303213021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17036313 (or 17036310 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1101303213021 its reverse (1203123031011), we get a palindrome (2304426244032).

The spelling of 1101303213021 in words is "one trillion, one hundred one billion, three hundred three million, two hundred thirteen thousand, twenty-one".