10101011021 has 8 divisors (see below), whose sum is σ = 10767235200. Its totient is φ = 9448246080.

The previous prime is 10101011009. The next prime is 10101011029. The reversal of 10101011021 is 12011010101.

It is a happy number.

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 10101011021 - 2⁶ = 10101010957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101011029) 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, 3363260 + ... + 3366261.

It is an arithmetic number, because the mean of its divisors is an integer number (1345904400).

Almost surely, 2^10101011021 is an apocalyptic number.

It is an amenable number.

10101011021 is a deficient number, since it is larger than the sum of its proper divisors (666224179).

10101011021 is an equidigital number, since it uses as much as digits as its factorization.

10101011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6729619.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 10101011021 its reverse (12011010101), we get a palindrome (22112021122).

The spelling of 10101011021 in words is "ten billion, one hundred one million, eleven thousand, twenty-one".