12212010001000 has 64 divisors (see below), whose sum is σ = 28838269746000. Its totient is φ = 4839989241600.

The previous prime is 12212010000991. The next prime is 12212010001003. The reversal of 12212010001000 is 10001021221.

It can be written as a sum of positive squares in 8 ways, for example, as 863587338436 + 11348422662564 = 929294^2 + 3368742^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (12212010001003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55909395 + ... + 56127394.

Almost surely, 2^{12212010001000} is an apocalyptic number.

12212010001000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12212010001000 is an abundant number, since it is smaller than the sum of its proper divisors (16626259745000).

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

12212010001000 is a wasteful number, since it uses less digits than its factorization.

12212010001000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112036919 (or 112036905 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 12212010001000 its reverse (10001021221), we get a palindrome (12222011022221).

The spelling of 12212010001000 in words is "twelve trillion, two hundred twelve billion, ten million, one thousand".