1000222001212 has 96 divisors (see below), whose sum is σ = 2027901173760. Its totient is φ = 422830200000.

The previous prime is 1000222001197. The next prime is 1000222001227. The reversal of 1000222001212 is 2121002220001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1000222001197) and next prime (1000222001227).

It is a junction number, because it is equal to n+sod(n) for n = 1000222001192 and 1000222001201.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 661959537 + ... + 661961047.

It is an arithmetic number, because the mean of its divisors is an integer number (21123970560).

Almost surely, 2^{1000222001212} is an apocalyptic number.

It is an amenable number.

1000222001212 is an abundant number, since it is smaller than the sum of its proper divisors (1027679172548).

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

1000222001212 is a wasteful number, since it uses less digits than its factorization.

1000222001212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2623 (or 2621 counting only the distinct ones).

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

Adding to 1000222001212 its reverse (2121002220001), we get a palindrome (3121224221213).

The spelling of 1000222001212 in words is "one trillion, two hundred twenty-two million, one thousand, two hundred twelve".