20101224401 has 16 divisors (see below), whose sum is σ = 21910862400. Its totient is φ = 18368078400.

The previous prime is 20101224389. The next prime is 20101224431. The reversal of 20101224401 is 10442210102.

It is a cyclic number.

It is not a de Polignac number, because 20101224401 - 2¹⁰ = 20101223377 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20101224401.

It is not an unprimeable number, because it can be changed into a prime (20101224431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544706 + ... + 580436.

It is an arithmetic number, because the mean of its divisors is an integer number (1369428900).

Almost surely, 2^20101224401 is an apocalyptic number.

It is an amenable number.

20101224401 is a deficient number, since it is larger than the sum of its proper divisors (1809637999).

20101224401 is a wasteful number, since it uses less digits than its factorization.

20101224401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36800.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20101224401 its reverse (10442210102), we get a palindrome (30543434503).

The spelling of 20101224401 in words is "twenty billion, one hundred one million, two hundred twenty-four thousand, four hundred one".