1021230213233 has 4 divisors (see below), whose sum is σ = 1021243539108. Its totient is φ = 1021216887360.

The previous prime is 1021230213209. The next prime is 1021230213251. The reversal of 1021230213233 is 3323120321201.

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

It can be written as a sum of positive squares in 2 ways, for example, as 642767785984 + 378462427249 = 801728^2 + 615193^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021230213233 - 2²⁶ = 1021163104369 is a prime.

It is a super-2 number, since 2×1021230213233² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1021230213199 and 1021230213208.

It is not an unprimeable number, because it can be changed into a prime (1021230213203) 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, 6547316 + ... + 6701477.

It is an arithmetic number, because the mean of its divisors is an integer number (255310884777).

Almost surely, 2^{1021230213233} is an apocalyptic number.

It is an amenable number.

1021230213233 is a deficient number, since it is larger than the sum of its proper divisors (13325875).

1021230213233 is an equidigital number, since it uses as much as digits as its factorization.

1021230213233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13325874.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1021230213233 its reverse (3323120321201), we get a palindrome (4344350534434).

The spelling of 1021230213233 in words is "one trillion, twenty-one billion, two hundred thirty million, two hundred thirteen thousand, two hundred thirty-three".