2012121002121 has 8 divisors (see below), whose sum is σ = 2684317642464. Its totient is φ = 1340669181600.

The previous prime is 2012121002093. The next prime is 2012121002173. The reversal of 2012121002121 is 1212001212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2012121002121 - 2⁶ = 2012121002057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012121002121.

It is not an unprimeable number, because it can be changed into a prime (2012121002921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186198651 + ... + 186209456.

It is an arithmetic number, because the mean of its divisors is an integer number (335539705308).

Almost surely, 2^{2012121002121} is an apocalyptic number.

It is an amenable number.

2012121002121 is a deficient number, since it is larger than the sum of its proper divisors (672196640343).

2012121002121 is a wasteful number, since it uses less digits than its factorization.

2012121002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372409911.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2012121002121 its reverse (1212001212102), we get a palindrome (3224122214223).

The spelling of 2012121002121 in words is "two trillion, twelve billion, one hundred twenty-one million, two thousand, one hundred twenty-one".