1023131213221 has 32 divisors (see below), whose sum is σ = 1183033797120. Its totient is φ = 876431576064.

The previous prime is 1023131213201. The next prime is 1023131213233. The reversal of 1023131213221 is 1223121313201.

It is not a de Polignac number, because 1023131213221 - 2⁹ = 1023131212709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1023131213192 and 1023131213201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023131213201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9281796 + ... + 9391378.

It is an arithmetic number, because the mean of its divisors is an integer number (36969806160).

Almost surely, 2^{1023131213221} is an apocalyptic number.

It is an amenable number.

1023131213221 is a deficient number, since it is larger than the sum of its proper divisors (159902583899).

1023131213221 is a wasteful number, since it uses less digits than its factorization.

1023131213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110205.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1023131213221 its reverse (1223121313201), we get a palindrome (2246252526422).

The spelling of 1023131213221 in words is "one trillion, twenty-three billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred twenty-one".