20002103215 has 4 divisors (see below), whose sum is σ = 24002523864. Its totient is φ = 16001682568.

The previous prime is 20002103207. The next prime is 20002103221. The reversal of 20002103215 is 51230120002.

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

It is a cyclic number.

It is not a de Polignac number, because 20002103215 - 2³ = 20002103207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2000210317 + ... + 2000210326.

It is an arithmetic number, because the mean of its divisors is an integer number (6000630966).

Almost surely, 2^20002103215 is an apocalyptic number.

20002103215 is a deficient number, since it is larger than the sum of its proper divisors (4000420649).

20002103215 is an equidigital number, since it uses as much as digits as its factorization.

20002103215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000420648.

The product of its (nonzero) digits is 120, while the sum is 16.

Adding to 20002103215 its reverse (51230120002), we get a palindrome (71232223217).

The spelling of 20002103215 in words is "twenty billion, two million, one hundred three thousand, two hundred fifteen".