102123213012 has 36 divisors (see below), whose sum is σ = 271731358080. Its totient is φ = 32249435472.

The previous prime is 102123213007. The next prime is 102123213041. The reversal of 102123213012 is 210312321201.

102123213012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×102123213012² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74650788 + ... + 74652155.

It is an arithmetic number, because the mean of its divisors is an integer number (7548093280).

Almost surely, 2^102123213012 is an apocalyptic number.

102123213012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102123213012 is an abundant number, since it is smaller than the sum of its proper divisors (169608145068).

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

102123213012 is a wasteful number, since it uses less digits than its factorization.

102123213012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149302972 (or 149302967 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 102123213012 its reverse (210312321201), we get a palindrome (312435534213).

The spelling of 102123213012 in words is "one hundred two billion, one hundred twenty-three million, two hundred thirteen thousand, twelve".