20121622203 has 4 divisors (see below), whose sum is σ = 26828829608. Its totient is φ = 13414414800.

The previous prime is 20121622201. The next prime is 20121622217. The reversal of 20121622203 is 30222612102.

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

It is not a de Polignac number, because 20121622203 - 2¹ = 20121622201 is a prime.

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 20121622203.

It is not an unprimeable number, because it can be changed into a prime (20121622201) 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, 3353603698 + ... + 3353603703.

It is an arithmetic number, because the mean of its divisors is an integer number (6707207402).

Almost surely, 2^20121622203 is an apocalyptic number.

20121622203 is a deficient number, since it is larger than the sum of its proper divisors (6707207405).

20121622203 is an equidigital number, since it uses as much as digits as its factorization.

20121622203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6707207404.

The product of its (nonzero) digits is 576, while the sum is 21.

The spelling of 20121622203 in words is "twenty billion, one hundred twenty-one million, six hundred twenty-two thousand, two hundred three".