20120203 has 2 divisors, whose sum is σ = 20120204. Its totient is φ = 20120202.

The previous prime is 20120189. The next prime is 20120207. The reversal of 20120203 is 30202102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20120203 - 2¹⁷ = 19989131 is a prime.

It is a super-2 number, since 2×20120203² = 809645137522418, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20120203.

It is not a weakly prime, because it can be changed into another prime (20120207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060101 + 10060102.

It is an arithmetic number, because the mean of its divisors is an integer number (10060102).

Almost surely, 2^20120203 is an apocalyptic number.

20120203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120203 is an equidigital number, since it uses as much as digits as its factorization.

20120203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 20120203 is about 4485.5549266507. The cubic root of 20120203 is about 271.9844777402.

Adding to 20120203 its reverse (30202102), we get a palindrome (50322305).

The spelling of 20120203 in words is "twenty million, one hundred twenty thousand, two hundred three".