102020022012021 has 24 divisors (see below), whose sum is σ = 144502439088000. Its totient is φ = 64011015839232.

The previous prime is 102020022011981. The next prime is 102020022012043. The reversal of 102020022012021 is 120210220020201.

It is not a de Polignac number, because 102020022012021 - 2⁴¹ = 99820998756469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102020022012121) 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, 35012265 + ... + 37814001.

It is an arithmetic number, because the mean of its divisors is an integer number (6020934962000).

Almost surely, 2^{102020022012021} is an apocalyptic number.

It is an amenable number.

102020022012021 is a deficient number, since it is larger than the sum of its proper divisors (42482417075979).

102020022012021 is a wasteful number, since it uses less digits than its factorization.

102020022012021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2843773 (or 2843756 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102020022012021 its reverse (120210220020201), we get a palindrome (222230242032222).

The spelling of 102020022012021 in words is "one hundred two trillion, twenty billion, twenty-two million, twelve thousand, twenty-one".