1101211023321 has 24 divisors (see below), whose sum is σ = 1600088784840. Its totient is φ = 729791479296.

The previous prime is 1101211023317. The next prime is 1101211023337. The reversal of 1101211023321 is 1233201121011.

1101211023321 is a `hidden beast` number, since 110 + 1 + 211 + 0 + 23 + 321 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 251864463321 + 849346560000 = 501861^2 + 921600^2 .

It is not a de Polignac number, because 1101211023321 - 2² = 1101211023317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1101211023294 and 1101211023303.

It is not an unprimeable number, because it can be changed into a prime (1101211023301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 520945 + ... + 1572833.

It is an arithmetic number, because the mean of its divisors is an integer number (66670366035).

Almost surely, 2^{1101211023321} is an apocalyptic number.

It is an amenable number.

1101211023321 is a deficient number, since it is larger than the sum of its proper divisors (498877761519).

1101211023321 is a wasteful number, since it uses less digits than its factorization.

1101211023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052585 (or 1052582 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1101211023321 its reverse (1233201121011), we get a palindrome (2334412144332).

The spelling of 1101211023321 in words is "one trillion, one hundred one billion, two hundred eleven million, twenty-three thousand, three hundred twenty-one".