2121010101002 has 8 divisors (see below), whose sum is σ = 3426247086276. Its totient is φ = 978927738912.

The previous prime is 2121010100981. The next prime is 2121010101019. The reversal of 2121010101002 is 2001010101212.

It can be written as a sum of positive squares in 2 ways, for example, as 1782147570841 + 338862530161 = 1334971^2 + 582119^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40788655763 + ... + 40788655814.

Almost surely, 2^{2121010101002} is an apocalyptic number.

2121010101002 is a deficient number, since it is larger than the sum of its proper divisors (1305236985274).

2121010101002 is a wasteful number, since it uses less digits than its factorization.

2121010101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81577311592.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 2121010101002 its reverse (2001010101212), we get a palindrome (4122020202214).

The spelling of 2121010101002 in words is "two trillion, one hundred twenty-one billion, ten million, one hundred one thousand, two".