20120221010003 has 2 divisors, whose sum is σ = 20120221010004. Its totient is φ = 20120221010002.

The previous prime is 20120221009961. The next prime is 20120221010027. The reversal of 20120221010003 is 30001012202102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20120221010003 - 2²⁴ = 20120204232787 is a prime.

It is a super-2 number, since 2×20120221010003² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20120221010003.

It is not a weakly prime, because it can be changed into another prime (20120221010093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060110505001 + 10060110505002.

It is an arithmetic number, because the mean of its divisors is an integer number (10060110505002).

Almost surely, 2^{20120221010003} is an apocalyptic number.

20120221010003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120221010003 is an equidigital number, since it uses as much as digits as its factorization.

20120221010003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20120221010003 its reverse (30001012202102), we get a palindrome (50121233212105).

The spelling of 20120221010003 in words is "twenty trillion, one hundred twenty billion, two hundred twenty-one million, ten thousand, three".