21201101479 has 2 divisors, whose sum is σ = 21201101480. Its totient is φ = 21201101478.

The previous prime is 21201101459. The next prime is 21201101513. The reversal of 21201101479 is 97410110212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21201101479 - 2⁹ = 21201100967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21201101419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600550739 + 10600550740.

It is an arithmetic number, because the mean of its divisors is an integer number (10600550740).

Almost surely, 2^21201101479 is an apocalyptic number.

21201101479 is a deficient number, since it is larger than the sum of its proper divisors (1).

21201101479 is an equidigital number, since it uses as much as digits as its factorization.

21201101479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

The spelling of 21201101479 in words is "twenty-one billion, two hundred one million, one hundred one thousand, four hundred seventy-nine".