1012221222012 has 288 divisors, whose sum is σ = 3438711005184. Its totient is φ = 242457753600.

The previous prime is 1012221222007. The next prime is 1012221222071. The reversal of 1012221222012 is 2102221222101.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 39158212 + ... + 39184052.

It is an arithmetic number, because the mean of its divisors is an integer number (11939968768).

Almost surely, 2^{1012221222012} is an apocalyptic number.

1012221222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1012221222012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1719355502592).

1012221222012 is an abundant number, since it is smaller than the sum of its proper divisors (2426489783172).

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

1012221222012 is a wasteful number, since it uses less digits than its factorization.

1012221222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26969 (or 26964 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1012221222012 its reverse (2102221222101), we get a palindrome (3114442444113).

The spelling of 1012221222012 in words is "one trillion, twelve billion, two hundred twenty-one million, two hundred twenty-two thousand, twelve".