1323212102021 has 16 divisors (see below), whose sum is σ = 1348973239680. Its totient is φ = 1297706356800.

The previous prime is 1323212101987. The next prime is 1323212102027. The reversal of 1323212102021 is 1202012123231.

It is a cyclic number.

It is not a de Polignac number, because 1323212102021 - 2³⁰ = 1322138360197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323212101984 and 1323212102002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323212102027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41454950 + ... + 41486856.

It is an arithmetic number, because the mean of its divisors is an integer number (84310827480).

Almost surely, 2^{1323212102021} is an apocalyptic number.

It is an amenable number.

1323212102021 is a deficient number, since it is larger than the sum of its proper divisors (25761137659).

1323212102021 is a wasteful number, since it uses less digits than its factorization.

1323212102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35884.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1323212102021 its reverse (1202012123231), we get a palindrome (2525224225252).

It can be divided in two parts, 132321210 and 2021, that added together give a palindrome (132323231).

The spelling of 1323212102021 in words is "one trillion, three hundred twenty-three billion, two hundred twelve million, one hundred two thousand, twenty-one".