21213310101 has 16 divisors (see below), whose sum is σ = 28573683840. Its totient is φ = 13997712960.

The previous prime is 21213310061. The next prime is 21213310177. The reversal of 21213310101 is 10101331212.

It is a happy number.

It is not a de Polignac number, because 21213310101 - 2⁶ = 21213310037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213310201) 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 15 ways as a sum of consecutive naturals, for example, 622731 + ... + 655911.

It is an arithmetic number, because the mean of its divisors is an integer number (1785855240).

Almost surely, 2^21213310101 is an apocalyptic number.

It is an amenable number.

21213310101 is a deficient number, since it is larger than the sum of its proper divisors (7360373739).

21213310101 is a wasteful number, since it uses less digits than its factorization.

21213310101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35356.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21213310101 its reverse (10101331212), we get a palindrome (31314641313).

The spelling of 21213310101 in words is "twenty-one billion, two hundred thirteen million, three hundred ten thousand, one hundred one".