1031211222 has 16 divisors (see below), whose sum is σ = 2096233392. Its totient is φ = 338101920.

The previous prime is 1031211217. The next prime is 1031211229. The reversal of 1031211222 is 2221121301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031211229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1408393 + ... + 1409124.

It is an arithmetic number, because the mean of its divisors is an integer number (131014587).

Almost surely, 2^1031211222 is an apocalyptic number.

1031211222 is an abundant number, since it is smaller than the sum of its proper divisors (1065022170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031211222 is a wasteful number, since it uses less digits than its factorization.

1031211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2817583.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1031211222 is about 32112.4776683457. The cubic root of 1031211222 is about 1010.2973414651.

Adding to 1031211222 its reverse (2221121301), we get a palindrome (3252332523).

The spelling of 1031211222 in words is "one billion, thirty-one million, two hundred eleven thousand, two hundred twenty-two".