2113121434 has 4 divisors (see below), whose sum is σ = 3169682154. Its totient is φ = 1056560716.

The previous prime is 2113121431. The next prime is 2113121441. The reversal of 2113121434 is 4341213112.

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., 1240096225 + 873025209 = 35215^2 + 29547^2 .

It is not an unprimeable number, because it can be changed into a prime (2113121431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 528280357 + ... + 528280360.

Almost surely, 2^2113121434 is an apocalyptic number.

2113121434 is a deficient number, since it is larger than the sum of its proper divisors (1056560720).

2113121434 is a wasteful number, since it uses less digits than its factorization.

2113121434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056560719.

The product of its digits is 576, while the sum is 22.

The square root of 2113121434 is about 45968.7005907280. The cubic root of 2113121434 is about 1283.2407775531.

Adding to 2113121434 its reverse (4341213112), we get a palindrome (6454334546).

The spelling of 2113121434 in words is "two billion, one hundred thirteen million, one hundred twenty-one thousand, four hundred thirty-four".