1001212222 has 8 divisors (see below), whose sum is σ = 1524233736. Its totient is φ = 493134312.

The previous prime is 1001212217. The next prime is 1001212231. The reversal of 1001212222 is 2222121001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3735733 + ... + 3736000.

It is an arithmetic number, because the mean of its divisors is an integer number (190529217).

Almost surely, 2^1001212222 is an apocalyptic number.

1001212222 is a deficient number, since it is larger than the sum of its proper divisors (523021514).

1001212222 is an equidigital number, since it uses as much as digits as its factorization.

1001212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7471802.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1001212222 is about 31641.9377093123. The cubic root of 1001212222 is about 1000.4039108341.

Adding to 1001212222 its reverse (2222121001), we get a palindrome (3223333223).

The spelling of 1001212222 in words is "one billion, one million, two hundred twelve thousand, two hundred twenty-two".