21203301407 has 2 divisors, whose sum is σ = 21203301408. Its totient is φ = 21203301406.

The previous prime is 21203301373. The next prime is 21203301451. The reversal of 21203301407 is 70410330212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21203301407 - 2¹⁰ = 21203300383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21203301467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601650703 + 10601650704.

It is an arithmetic number, because the mean of its divisors is an integer number (10601650704).

Almost surely, 2^21203301407 is an apocalyptic number.

21203301407 is a deficient number, since it is larger than the sum of its proper divisors (1).

21203301407 is an equidigital number, since it uses as much as digits as its factorization.

21203301407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 23.

Adding to 21203301407 its reverse (70410330212), we get a palindrome (91613631619).

The spelling of 21203301407 in words is "twenty-one billion, two hundred three million, three hundred one thousand, four hundred seven".