1021252203 has 24 divisors (see below), whose sum is σ = 1566021600. Its totient is φ = 639101184.

The previous prime is 1021252171. The next prime is 1021252247. The reversal of 1021252203 is 3022521201.

It is not a de Polignac number, because 1021252203 - 2⁵ = 1021252171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021252403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50938 + ... + 68096.

It is an arithmetic number, because the mean of its divisors is an integer number (65250900).

Almost surely, 2^1021252203 is an apocalyptic number.

1021252203 is a deficient number, since it is larger than the sum of its proper divisors (544769397).

1021252203 is a wasteful number, since it uses less digits than its factorization.

1021252203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17571 (or 17568 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1021252203 is about 31957.0368307201. The cubic root of 1021252203 is about 1007.0344678975.

Adding to 1021252203 its reverse (3022521201), we get a palindrome (4043773404).

The spelling of 1021252203 in words is "one billion, twenty-one million, two hundred fifty-two thousand, two hundred three".