102010002011021 has 4 divisors (see below), whose sum is σ = 109856925242652. Its totient is φ = 94163078779392.

The previous prime is 102010002010967. The next prime is 102010002011033. The reversal of 102010002011021 is 120110200010201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22181405961796 + 79828596049225 = 4709714^2 + 8934685^2 .

It is a cyclic number.

It is not a de Polignac number, because 102010002011021 - 2¹⁰ = 102010002009997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102010002010993 and 102010002011011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102010002061021) 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, 3923461615796 + ... + 3923461615821.

It is an arithmetic number, because the mean of its divisors is an integer number (27464231310663).

Almost surely, 2^{102010002011021} is an apocalyptic number.

It is an amenable number.

102010002011021 is a deficient number, since it is larger than the sum of its proper divisors (7846923231631).

102010002011021 is an equidigital number, since it uses as much as digits as its factorization.

102010002011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7846923231630.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102010002011021 its reverse (120110200010201), we get a palindrome (222120202021222).

The spelling of 102010002011021 in words is "one hundred two trillion, ten billion, two million, eleven thousand, twenty-one".