1000002212121 has 32 divisors (see below), whose sum is σ = 1457481715200. Its totient is φ = 604840654080.

The previous prime is 1000002212017. The next prime is 1000002212149. The reversal of 1000002212121 is 1212122000001.

It is not a de Polignac number, because 1000002212121 - 2¹⁰ = 1000002211097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000002212097 and 1000002212106.

It is not an unprimeable number, because it can be changed into a prime (1000002212161) 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 31 ways as a sum of consecutive naturals, for example, 60026625 + ... + 60043281.

It is an arithmetic number, because the mean of its divisors is an integer number (45546303600).

Almost surely, 2^{1000002212121} is an apocalyptic number.

1000002212121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000002212121 is a deficient number, since it is larger than the sum of its proper divisors (457479503079).

1000002212121 is a wasteful number, since it uses less digits than its factorization.

1000002212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20229.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1000002212121 its reverse (1212122000001), we get a palindrome (2212124212122).

The spelling of 1000002212121 in words is "one trillion, two million, two hundred twelve thousand, one hundred twenty-one".