1023220202 has 4 divisors (see below), whose sum is σ = 1534830306. Its totient is φ = 511610100.

The previous prime is 1023220201. The next prime is 1023220229. The reversal of 1023220202 is 2020223201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2020223201 = 29 ⋅69662869.

It can be written as a sum of positive squares in only one way, i.e., 590538601 + 432681601 = 24301^2 + 20801^2 .

It is not an unprimeable number, because it can be changed into a prime (1023220201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255805049 + ... + 255805052.

Almost surely, 2^1023220202 is an apocalyptic number.

1023220202 is a deficient number, since it is larger than the sum of its proper divisors (511610104).

1023220202 is an equidigital number, since it uses as much as digits as its factorization.

1023220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511610103.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1023220202 is about 31987.8133357065. The cubic root of 1023220202 is about 1007.6809197558.

Adding to 1023220202 its reverse (2020223201), we get a palindrome (3043443403).

Subtracting 1023220202 from its reverse (2020223201), we obtain a cube (997002999 = 999³).

The spelling of 1023220202 in words is "one billion, twenty-three million, two hundred twenty thousand, two hundred two".