1001212121102 has 4 divisors (see below), whose sum is σ = 1501818181656. Its totient is φ = 500606060550.

The previous prime is 1001212121093. The next prime is 1001212121159. The reversal of 1001212121102 is 2011212121001.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×1001212121102² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250303030274 + ... + 250303030277.

It is an arithmetic number, because the mean of its divisors is an integer number (375454545414).

Almost surely, 2^{1001212121102} is an apocalyptic number.

1001212121102 is a deficient number, since it is larger than the sum of its proper divisors (500606060554).

1001212121102 is an equidigital number, since it uses as much as digits as its factorization.

1001212121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500606060553.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1001212121102 its reverse (2011212121001), we get a palindrome (3012424242103).

The spelling of 1001212121102 in words is "one trillion, one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred two".