1023122312221 has 4 divisors (see below), whose sum is σ = 1027971233344. Its totient is φ = 1018273391100.

The previous prime is 1023122312203. The next prime is 1023122312227. The reversal of 1023122312221 is 1222132213201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1023122312221 - 2²¹ = 1023120215069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023122312192 and 1023122312201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023122312227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2424460245 + ... + 2424460666.

It is an arithmetic number, because the mean of its divisors is an integer number (256992808336).

Almost surely, 2^{1023122312221} is an apocalyptic number.

It is an amenable number.

1023122312221 is a deficient number, since it is larger than the sum of its proper divisors (4848921123).

1023122312221 is an equidigital number, since it uses as much as digits as its factorization.

1023122312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4848921122.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1023122312221 its reverse (1222132213201), we get a palindrome (2245254525422).

The spelling of 1023122312221 in words is "one trillion, twenty-three billion, one hundred twenty-two million, three hundred twelve thousand, two hundred twenty-one".