102121212110 has 32 divisors (see below), whose sum is σ = 185693040000. Its totient is φ = 40432089600.

The previous prime is 102121212107. The next prime is 102121212121. The reversal of 102121212110 is 11212121201.

It is a super-2 number, since 2×102121212110² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3914891 + ... + 3940889.

It is an arithmetic number, because the mean of its divisors is an integer number (5802907500).

Almost surely, 2^102121212110 is an apocalyptic number.

102121212110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102121212110 is a deficient number, since it is larger than the sum of its proper divisors (83571827890).

102121212110 is a wasteful number, since it uses less digits than its factorization.

102121212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29996.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102121212110 its reverse (11212121201), we get a palindrome (113333333311).

Subtracting from 102121212110 its reverse (11212121201), we obtain a palindrome (90909090909).

The spelling of 102121212110 in words is "one hundred two billion, one hundred twenty-one million, two hundred twelve thousand, one hundred ten".