1001012121102 has 48 divisors (see below), whose sum is σ = 2333872569600. Its totient is φ = 285390996912.

The previous prime is 1001012121029. The next prime is 1001012121107. The reversal of 1001012121102 is 2011212101001.

It is a super-2 number, since 2×1001012121102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001012121107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3508102 + ... + 3782697.

It is an arithmetic number, because the mean of its divisors is an integer number (48622345200).

Almost surely, 2^{1001012121102} is an apocalyptic number.

1001012121102 is an abundant number, since it is smaller than the sum of its proper divisors (1332860448498).

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

1001012121102 is a wasteful number, since it uses less digits than its factorization.

1001012121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7291285 (or 7291278 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 1001012121102 its reverse (2011212101001), we get a palindrome (3012224222103).

The spelling of 1001012121102 in words is "one trillion, one billion, twelve million, one hundred twenty-one thousand, one hundred two".