1212222011000 has 512 divisors, whose sum is σ = 3940005888000. Its totient is φ = 336736512000.

The previous prime is 1212222010997. The next prime is 1212222011003. The reversal of 1212222011000 is 1102222121.

It is an interprime number because it is at equal distance from previous prime (1212222010997) and next prime (1212222011003).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212222011003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 29008121 + ... + 29049879.

It is an arithmetic number, because the mean of its divisors is an integer number (7695324000).

Almost surely, 2^{1212222011000} is an apocalyptic number.

1212222011000 is a gapful number since it is divisible by the number (10) 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 1212222011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1970002944000).

1212222011000 is an abundant number, since it is smaller than the sum of its proper divisors (2727783877000).

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

1212222011000 is a wasteful number, since it uses less digits than its factorization.

1212222011000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41840 (or 41826 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1212222011000 its reverse (1102222121), we get a palindrome (1213324233121).

The spelling of 1212222011000 in words is "one trillion, two hundred twelve billion, two hundred twenty-two million, eleven thousand".