21010231101 has 8 divisors (see below), whose sum is σ = 28696901184. Its totient is φ = 13665190880.

The previous prime is 21010231091. The next prime is 21010231111. The reversal of 21010231101 is 10113201012.

It is an interprime number because it is at equal distance from previous prime (21010231091) and next prime (21010231111).

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 21010231101 - 2⁵ = 21010231069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010231111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85407321 + ... + 85407566.

It is an arithmetic number, because the mean of its divisors is an integer number (3587112648).

Almost surely, 2^21010231101 is an apocalyptic number.

It is an amenable number.

21010231101 is a deficient number, since it is larger than the sum of its proper divisors (7686670083).

21010231101 is a wasteful number, since it uses less digits than its factorization.

21010231101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170814931.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 21010231101 its reverse (10113201012), we get a palindrome (31123432113).

The spelling of 21010231101 in words is "twenty-one billion, ten million, two hundred thirty-one thousand, one hundred one".