2121100012002 has 16 divisors (see below), whose sum is σ = 4242332495232. Its totient is φ = 707011258800.

The previous prime is 2121100011971. The next prime is 2121100012007. The reversal of 2121100012002 is 2002100011212.

It is not an unprimeable number, because it can be changed into a prime (2121100012007) 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, 5310874 + ... + 5696277.

It is an arithmetic number, because the mean of its divisors is an integer number (265145780952).

Almost surely, 2^{2121100012002} is an apocalyptic number.

2121100012002 is an abundant number, since it is smaller than the sum of its proper divisors (2121232483230).

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

2121100012002 is a wasteful number, since it uses less digits than its factorization.

2121100012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11039273.

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

Adding to 2121100012002 its reverse (2002100011212), we get a palindrome (4123200023214).

The spelling of 2121100012002 in words is "two trillion, one hundred twenty-one billion, one hundred million, twelve thousand, two".