421221202122103 has 2 divisors, whose sum is σ = 421221202122104. Its totient is φ = 421221202122102.

The previous prime is 421221202122059. The next prime is 421221202122151. The reversal of 421221202122103 is 301221202122124.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 421221202122103 - 2⁹ = 421221202121591 is a prime.

It is a super-2 number, since 2×421221202122103² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421221203122103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210610601061051 + 210610601061052.

It is an arithmetic number, because the mean of its divisors is an integer number (210610601061052).

Almost surely, 2^{421221202122103} is an apocalyptic number.

421221202122103 is a deficient number, since it is larger than the sum of its proper divisors (1).

421221202122103 is an equidigital number, since it uses as much as digits as its factorization.

421221202122103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 421221202122103 its reverse (301221202122124), we get a palindrome (722442404244227).

The spelling of 421221202122103 in words is "four hundred twenty-one trillion, two hundred twenty-one billion, two hundred two million, one hundred twenty-two thousand, one hundred three".