102021021101 has 2 divisors, whose sum is σ = 102021021102. Its totient is φ = 102021021100.

The previous prime is 102021021079. The next prime is 102021021121. The reversal of 102021021101 is 101120120201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86019024100 + 16001997001 = 293290^2 + 126499^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021021101 - 2³⁴ = 84841151917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102021021121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010510550 + 51010510551.

It is an arithmetic number, because the mean of its divisors is an integer number (51010510551).

Almost surely, 2^102021021101 is an apocalyptic number.

It is an amenable number.

102021021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021021101 is an equidigital number, since it uses as much as digits as its factorization.

102021021101 is an evil number, because the sum of its binary digits is even.

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

Adding to 102021021101 its reverse (101120120201), we get a palindrome (203141141302).

The spelling of 102021021101 in words is "one hundred two billion, twenty-one million, twenty-one thousand, one hundred one".