2113121002 has 4 divisors (see below), whose sum is σ = 3169681506. Its totient is φ = 1056560500.

The previous prime is 2113120963. The next prime is 2113121027. The reversal of 2113121002 is 2001213112.

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

It can be written as a sum of positive squares in only one way, i.e., 1759718601 + 353402401 = 41949^2 + 18799^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528280249 + ... + 528280252.

Almost surely, 2^2113121002 is an apocalyptic number.

2113121002 is a deficient number, since it is larger than the sum of its proper divisors (1056560504).

2113121002 is a wasteful number, since it uses less digits than its factorization.

2113121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056560503.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2113121002 is about 45968.6958918784. The cubic root of 2113121002 is about 1283.2406901058.

Adding to 2113121002 its reverse (2001213112), we get a palindrome (4114334114).

It can be divided in two parts, 211 and 3121002, that added together give a palindrome (3121213).

The spelling of 2113121002 in words is "two billion, one hundred thirteen million, one hundred twenty-one thousand, two".