1020233231221 has 24 divisors (see below), whose sum is σ = 1080603014400. Its totient is φ = 962947876800.

The previous prime is 1020233231197. The next prime is 1020233231257. The reversal of 1020233231221 is 1221323320201.

It is not a de Polignac number, because 1020233231221 - 2¹¹ = 1020233229173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020233231192 and 1020233231201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020233231261) 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 23 ways as a sum of consecutive naturals, for example, 6634320 + ... + 6786358.

It is an arithmetic number, because the mean of its divisors is an integer number (45025125600).

Almost surely, 2^{1020233231221} is an apocalyptic number.

It is an amenable number.

1020233231221 is a deficient number, since it is larger than the sum of its proper divisors (60369783179).

1020233231221 is a wasteful number, since it uses less digits than its factorization.

1020233231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152277 (or 152248 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1020233231221 its reverse (1221323320201), we get a palindrome (2241556551422).

The spelling of 1020233231221 in words is "one trillion, twenty billion, two hundred thirty-three million, two hundred thirty-one thousand, two hundred twenty-one".