1001212002123 has 16 divisors (see below), whose sum is σ = 1348759196160. Its totient is φ = 660604006944.

The previous prime is 1001212002079. The next prime is 1001212002139. The reversal of 1001212002123 is 3212002121001.

It is not a de Polignac number, because 1001212002123 - 2⁶ = 1001212002059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1001212002823) 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 15 ways as a sum of consecutive naturals, for example, 4166536 + ... + 4400277.

It is an arithmetic number, because the mean of its divisors is an integer number (84297449760).

Almost surely, 2^{1001212002123} is an apocalyptic number.

1001212002123 is a deficient number, since it is larger than the sum of its proper divisors (347547194037).

1001212002123 is a wasteful number, since it uses less digits than its factorization.

1001212002123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8567218.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 1001212002123 its reverse (3212002121001), we get a palindrome (4213214123124).

The spelling of 1001212002123 in words is "one trillion, one billion, two hundred twelve million, two thousand, one hundred twenty-three".