223033031021 has 2 divisors, whose sum is σ = 223033031022. Its totient is φ = 223033031020.

The previous prime is 223033030991. The next prime is 223033031027. The reversal of 223033031021 is 120130330322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148510036900 + 74522994121 = 385370^2 + 272989^2 .

It is a cyclic number.

It is not a de Polignac number, because 223033031021 - 2¹⁴ = 223033014637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 223033030984 and 223033031002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223033031027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111516515510 + 111516515511.

It is an arithmetic number, because the mean of its divisors is an integer number (111516515511).

Almost surely, 2^223033031021 is an apocalyptic number.

It is an amenable number.

223033031021 is a deficient number, since it is larger than the sum of its proper divisors (1).

223033031021 is an equidigital number, since it uses as much as digits as its factorization.

223033031021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 223033031021 its reverse (120130330322), we get a palindrome (343163361343).

The spelling of 223033031021 in words is "two hundred twenty-three billion, thirty-three million, thirty-one thousand, twenty-one".