102102211 has 4 divisors (see below), whose sum is σ = 102631432. Its totient is φ = 101572992.

The previous prime is 102102199. The next prime is 102102229. The reversal of 102102211 is 112201201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112201201 = 7 ⋅16028743.

It is a cyclic number.

It is not a de Polignac number, because 102102211 - 2¹⁷ = 101971139 is a prime.

It is a super-2 number, since 2×102102211² = 20849722982177042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102102241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264321 + ... + 264706.

It is an arithmetic number, because the mean of its divisors is an integer number (25657858).

Almost surely, 2^102102211 is an apocalyptic number.

102102211 is a deficient number, since it is larger than the sum of its proper divisors (529221).

102102211 is an equidigital number, since it uses as much as digits as its factorization.

102102211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529220.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 102102211 is about 10104.5638698560. The cubic root of 102102211 is about 467.3888872026.

Adding to 102102211 its reverse (112201201), we get a palindrome (214303412).

It can be divided in two parts, 10210 and 2211, that added together give a palindrome (12421).

The spelling of 102102211 in words is "one hundred two million, one hundred two thousand, two hundred eleven".