1102321205021 has 2 divisors, whose sum is σ = 1102321205022. Its totient is φ = 1102321205020.

The previous prime is 1102321204981. The next prime is 1102321205107. The reversal of 1102321205021 is 1205021232011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024976032921 + 77345172100 = 1012411^2 + 278110^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1102321205021 is a prime.

It is a super-2 number, since 2×1102321205021² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1102321204984 and 1102321205002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1102321205221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 551160602510 + 551160602511.

It is an arithmetic number, because the mean of its divisors is an integer number (551160602511).

Almost surely, 2^{1102321205021} is an apocalyptic number.

It is an amenable number.

1102321205021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1102321205021 is an equidigital number, since it uses as much as digits as its factorization.

1102321205021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 1102321205021 its reverse (1205021232011), we get a palindrome (2307342437032).

The spelling of 1102321205021 in words is "one trillion, one hundred two billion, three hundred twenty-one million, two hundred five thousand, twenty-one".