10012021101 has 24 divisors (see below), whose sum is σ = 15301881920. Its totient is φ = 6290597376.

The previous prime is 10012021099. The next prime is 10012021111. The reversal of 10012021101 is 10112021001.

It is a happy number.

It is not a de Polignac number, because 10012021101 - 2¹ = 10012021099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012021111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 118681 + ... + 184686.

Almost surely, 2^10012021101 is an apocalyptic number.

It is an amenable number.

10012021101 is a deficient number, since it is larger than the sum of its proper divisors (5289860819).

10012021101 is a wasteful number, since it uses less digits than its factorization.

10012021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303585 (or 303582 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10012021101 its reverse (10112021001), we get a palindrome (20124042102).

The spelling of 10012021101 in words is "ten billion, twelve million, twenty-one thousand, one hundred one".