102211010066205 has 20 divisors (see below), whose sum is σ = 183222699526812. Its totient is φ = 54512538701760.

The previous prime is 102211010066201. The next prime is 102211010066219. The reversal of 102211010066205 is 502660010112201.

102211010066205 is a `hidden beast` number, since 1 + 0 + 2 + 21 + 1 + 0 + 10 + 0 + 6 + 620 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 11889441883449 + 90321568182756 = 3448107^2 + 9503766^2 .

It is not a de Polignac number, because 102211010066205 - 2² = 102211010066201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102211010066201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 126186431776 + ... + 126186432585.

Almost surely, 2^{102211010066205} is an apocalyptic number.

102211010066205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

102211010066205 is a deficient number, since it is larger than the sum of its proper divisors (81011689460607).

102211010066205 is an equidigital number, since it uses as much as digits as its factorization.

102211010066205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252372864378 (or 252372864369 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

Adding to 102211010066205 its reverse (502660010112201), we get a palindrome (604871020178406).

The spelling of 102211010066205 in words is "one hundred two trillion, two hundred eleven billion, ten million, sixty-six thousand, two hundred five".