2113352021 has 4 divisors (see below), whose sum is σ = 2305474944. Its totient is φ = 1921229100.

The previous prime is 2113351997. The next prime is 2113352023. The reversal of 2113352021 is 1202533112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2113352021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2113351984 and 2113352002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2113352023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96061445 + ... + 96061466.

It is an arithmetic number, because the mean of its divisors is an integer number (576368736).

Almost surely, 2^2113352021 is an apocalyptic number.

It is an amenable number.

2113352021 is a deficient number, since it is larger than the sum of its proper divisors (192122923).

2113352021 is a wasteful number, since it uses less digits than its factorization.

2113352021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192122922.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 2113352021 is about 45971.2086093024. The cubic root of 2113352021 is about 1283.2874522455.

Adding to 2113352021 its reverse (1202533112), we get a palindrome (3315885133).

The spelling of 2113352021 in words is "two billion, one hundred thirteen million, three hundred fifty-two thousand, twenty-one".