102011002210021 has 2 divisors, whose sum is σ = 102011002210022. Its totient is φ = 102011002210020.

The previous prime is 102011002209967. The next prime is 102011002210171. The reversal of 102011002210021 is 120012200110201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 84948204060225 + 17062798149796 = 9216735^2 + 4130714^2 .

It is a cyclic number.

It is not a de Polignac number, because 102011002210021 - 2⁹ = 102011002209509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102011002209983 and 102011002210010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102011002810021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51005501105010 + 51005501105011.

It is an arithmetic number, because the mean of its divisors is an integer number (51005501105011).

Almost surely, 2^{102011002210021} is an apocalyptic number.

It is an amenable number.

102011002210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

102011002210021 is an equidigital number, since it uses as much as digits as its factorization.

102011002210021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 102011002210021 its reverse (120012200110201), we get a palindrome (222023202320222).

The spelling of 102011002210021 in words is "one hundred two trillion, eleven billion, two million, two hundred ten thousand, twenty-one".