10010101002021 has 48 divisors (see below), whose sum is σ = 15316057411200. Its totient is φ = 6282307672704.

The previous prime is 10010101001987. The next prime is 10010101002061. The reversal of 10010101002021 is 12020010101001.

It is a happy number.

It is not a de Polignac number, because 10010101002021 - 2¹⁰ = 10010101000997 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10010101001994 and 10010101002012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10010101002061) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 92156275 + ... + 92264831.

It is an arithmetic number, because the mean of its divisors is an integer number (319084529400).

Almost surely, 2^{10010101002021} is an apocalyptic number.

It is an amenable number.

10010101002021 is a deficient number, since it is larger than the sum of its proper divisors (5305956409179).

10010101002021 is a wasteful number, since it uses less digits than its factorization.

10010101002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111978 (or 111975 counting only the distinct ones).

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

Adding to 10010101002021 its reverse (12020010101001), we get a palindrome (22030111103022).

The spelling of 10010101002021 in words is "ten trillion, ten billion, one hundred one million, two thousand, twenty-one".