102021012002221 has 8 divisors (see below), whose sum is σ = 109871573592704. Its totient is φ = 94170849188400.

The previous prime is 102021012002201. The next prime is 102021012002237. The reversal of 102021012002221 is 122200210120201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102021012002221 - 2⁹ = 102021012001709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102021012002195 and 102021012002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021012002201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99162705 + ... + 100186246.

It is an arithmetic number, because the mean of its divisors is an integer number (13733946699088).

Almost surely, 2^{102021012002221} is an apocalyptic number.

It is an amenable number.

102021012002221 is a deficient number, since it is larger than the sum of its proper divisors (7850561590483).

102021012002221 is a wasteful number, since it uses less digits than its factorization.

102021012002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199388331.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102021012002221 its reverse (122200210120201), we get a palindrome (224221222122422).

The spelling of 102021012002221 in words is "one hundred two trillion, twenty-one billion, twelve million, two thousand, two hundred twenty-one".