21101302101 has 16 divisors (see below), whose sum is σ = 30769363008. Its totient is φ = 12756768000.

The previous prime is 21101302099. The next prime is 21101302121. The reversal of 21101302101 is 10120310112.

It is not a de Polignac number, because 21101302101 - 2¹ = 21101302099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101302121) 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, 784066 + ... + 810531.

It is an arithmetic number, because the mean of its divisors is an integer number (1923085188).

Almost surely, 2^21101302101 is an apocalyptic number.

It is an amenable number.

21101302101 is a deficient number, since it is larger than the sum of its proper divisors (9668060907).

21101302101 is a wasteful number, since it uses less digits than its factorization.

21101302101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595012.

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

Adding to 21101302101 its reverse (10120310112), we get a palindrome (31221612213).

The spelling of 21101302101 in words is "twenty-one billion, one hundred one million, three hundred two thousand, one hundred one".