1001011212222 has 32 divisors (see below), whose sum is σ = 2288103552000. Its totient is φ = 285993463008.

The previous prime is 1001011212197. The next prime is 1001011212241. The reversal of 1001011212222 is 2222121101001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 890779 + ... + 1671977.

It is an arithmetic number, because the mean of its divisors is an integer number (71503236000).

Almost surely, 2^{1001011212222} is an apocalyptic number.

1001011212222 is an abundant number, since it is smaller than the sum of its proper divisors (1287092339778).

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

1001011212222 is a wasteful number, since it uses less digits than its factorization.

1001011212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811720.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1001011212222 its reverse (2222121101001), we get a palindrome (3223132313223).

The spelling of 1001011212222 in words is "one trillion, one billion, eleven million, two hundred twelve thousand, two hundred twenty-two".