21862651103 has 4 divisors (see below), whose sum is σ = 22275154008. Its totient is φ = 21450148200.

The previous prime is 21862651099. The next prime is 21862651133. The reversal of 21862651103 is 30115626812.

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 21862651103 - 2² = 21862651099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21862651133) 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, 206251373 + ... + 206251478.

It is an arithmetic number, because the mean of its divisors is an integer number (5568788502).

Almost surely, 2^21862651103 is an apocalyptic number.

21862651103 is a deficient number, since it is larger than the sum of its proper divisors (412502905).

21862651103 is an equidigital number, since it uses as much as digits as its factorization.

21862651103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412502904.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 21862651103 in words is "twenty-one billion, eight hundred sixty-two million, six hundred fifty-one thousand, one hundred three".