1031222201 has 4 divisors (see below), whose sum is σ = 1056374004. Its totient is φ = 1006070400.

The previous prime is 1031222191. The next prime is 1031222233. The reversal of 1031222201 is 1022221301.

It is a happy number.

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 262602025 + 768620176 = 16205^2 + 27724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031222201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1031222251) 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, 12575840 + ... + 12575921.

It is an arithmetic number, because the mean of its divisors is an integer number (264093501).

Almost surely, 2^1031222201 is an apocalyptic number.

It is an amenable number.

1031222201 is a deficient number, since it is larger than the sum of its proper divisors (25151803).

1031222201 is an equidigital number, since it uses as much as digits as its factorization.

1031222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25151802.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1031222201 is about 32112.6486139029. The cubic root of 1031222201 is about 1010.3009268977.

Adding to 1031222201 its reverse (1022221301), we get a palindrome (2053443502).

The spelling of 1031222201 in words is "one billion, thirty-one million, two hundred twenty-two thousand, two hundred one".