10020102002021 has 4 divisors (see below), whose sum is σ = 10113747815232. Its totient is φ = 9926456188812.

The previous prime is 10020102001933. The next prime is 10020102002087. The reversal of 10020102002021 is 12020020102001.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10020102002021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10020102001993 and 10020102002011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020102002321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46822906445 + ... + 46822906658.

It is an arithmetic number, because the mean of its divisors is an integer number (2528436953808).

Almost surely, 2^{10020102002021} is an apocalyptic number.

It is an amenable number.

10020102002021 is a deficient number, since it is larger than the sum of its proper divisors (93645813211).

10020102002021 is an equidigital number, since it uses as much as digits as its factorization.

10020102002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93645813210.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10020102002021 its reverse (12020020102001), we get a palindrome (22040122104022).

The spelling of 10020102002021 in words is "ten trillion, twenty billion, one hundred two million, two thousand, twenty-one".