1001211222 has 16 divisors (see below), whose sum is σ = 2184460992. Its totient is φ = 303397320.

The previous prime is 1001211221. The next prime is 1001211223. The reversal of 1001211222 is 2221121001.

It is an interprime number because it is at equal distance from previous prime (1001211221) and next prime (1001211223).

It is a super-2 number, since 2×1001211222² = 2004847822117466568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001211198 and 1001211207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001211221) 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, 7584868 + ... + 7584999.

It is an arithmetic number, because the mean of its divisors is an integer number (136528812).

Almost surely, 2^1001211222 is an apocalyptic number.

1001211222 is an abundant number, since it is smaller than the sum of its proper divisors (1183249770).

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

1001211222 is a wasteful number, since it uses less digits than its factorization.

1001211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15169883.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1001211222 is about 31641.9219074948. The cubic root of 1001211222 is about 1000.4035777697.

Adding to 1001211222 its reverse (2221121001), we get a palindrome (3222332223).

The spelling of 1001211222 in words is "one billion, one million, two hundred eleven thousand, two hundred twenty-two".