102122121220 has 24 divisors (see below), whose sum is σ = 245093091264. Its totient is φ = 35013298656.

The previous prime is 102122121209. The next prime is 102122121263. The reversal of 102122121220 is 22121221201.

It is a happy number.

102122121220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 102122121194 and 102122121203.

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 7 ways as a sum of consecutive naturals, for example, 364721722 + ... + 364722001.

It is an arithmetic number, because the mean of its divisors is an integer number (10212212136).

Almost surely, 2^102122121220 is an apocalyptic number.

102122121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102122121220 is an abundant number, since it is smaller than the sum of its proper divisors (142970970044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102122121220 is a wasteful number, since it uses less digits than its factorization.

102122121220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729443739 (or 729443737 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102122121220 its reverse (22121221201), we get a palindrome (124243342421).

It can be divided in two parts, 1021221 and 21220, that added together give a square (1042441 = 1021²).

The spelling of 102122121220 in words is "one hundred two billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty".