1021212210323 has 4 divisors (see below), whose sum is σ = 1021888063728. Its totient is φ = 1020536356920.

The previous prime is 1021212210301. The next prime is 1021212210331. The reversal of 1021212210323 is 3230122121201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1021212210323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021212210295 and 1021212210304.

It is not an unprimeable number, because it can be changed into a prime (1021212210923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 337924436 + ... + 337927457.

It is an arithmetic number, because the mean of its divisors is an integer number (255472015932).

Almost surely, 2^{1021212210323} is an apocalyptic number.

1021212210323 is a deficient number, since it is larger than the sum of its proper divisors (675853405).

1021212210323 is an equidigital number, since it uses as much as digits as its factorization.

1021212210323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675853404.

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

Adding to 1021212210323 its reverse (3230122121201), we get a palindrome (4251334331524).

The spelling of 1021212210323 in words is "one trillion, twenty-one billion, two hundred twelve million, two hundred ten thousand, three hundred twenty-three".