21123101041 has 8 divisors (see below), whose sum is σ = 24142069440. Its totient is φ = 18104478288.

The previous prime is 21123100979. The next prime is 21123101047. The reversal of 21123101041 is 14010132112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21123101041 - 2¹³ = 21123092849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21123101047) 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 in 7 ways as a sum of consecutive naturals, for example, 61410 + ... + 214516.

It is an arithmetic number, because the mean of its divisors is an integer number (3017758680).

Almost surely, 2^21123101041 is an apocalyptic number.

It is an amenable number.

21123101041 is a deficient number, since it is larger than the sum of its proper divisors (3018968399).

21123101041 is a wasteful number, since it uses less digits than its factorization.

21123101041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172823.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21123101041 its reverse (14010132112), we get a palindrome (35133233153).

The spelling of 21123101041 in words is "twenty-one billion, one hundred twenty-three million, one hundred one thousand, forty-one".