102211390 has 16 divisors (see below), whose sum is σ = 188953632. Its totient is φ = 39779424.

The previous prime is 102211363. The next prime is 102211391. The reversal of 102211390 is 93112201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102211391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137754 + ... + 138493.

It is an arithmetic number, because the mean of its divisors is an integer number (11809602).

Almost surely, 2^102211390 is an apocalyptic number.

102211390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102211390 is a deficient number, since it is larger than the sum of its proper divisors (86742242).

102211390 is a wasteful number, since it uses less digits than its factorization.

102211390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276291.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 102211390 is about 10109.9648861903. The cubic root of 102211390 is about 467.5554225237. Note that the first 3 decimals are identical.

Adding to 102211390 its reverse (93112201), we get a palindrome (195323591).

It can be divided in two parts, 10221 and 1390, that added together give a palindrome (11611).

The spelling of 102211390 in words is "one hundred two million, two hundred eleven thousand, three hundred ninety".