2100243401 has 4 divisors (see below), whose sum is σ = 2119871952. Its totient is φ = 2080614852.

The previous prime is 2100243347. The next prime is 2100243407. The reversal of 2100243401 is 1043420012.

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 not a de Polignac number, because 2100243401 - 2³⁰ = 1026501577 is a prime.

It is a super-2 number, since 2×2100243401² = 8822044686888093602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2100243401.

It is not an unprimeable number, because it can be changed into a prime (2100243407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9814115 + ... + 9814328.

It is an arithmetic number, because the mean of its divisors is an integer number (529967988).

Almost surely, 2^2100243401 is an apocalyptic number.

It is an amenable number.

2100243401 is a deficient number, since it is larger than the sum of its proper divisors (19628551).

2100243401 is a wasteful number, since it uses less digits than its factorization.

2100243401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19628550.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2100243401 is about 45828.4125952449. The cubic root of 2100243401 is about 1280.6286383538.

Adding to 2100243401 its reverse (1043420012), we get a palindrome (3143663413).

The spelling of 2100243401 in words is "two billion, one hundred million, two hundred forty-three thousand, four hundred one".