121223112102 has 24 divisors (see below), whose sum is σ = 262663521120. Its totient is φ = 40405635600.

The previous prime is 121223112089. The next prime is 121223112103. The reversal of 121223112102 is 201211322121.

121223112102 is a `hidden beast` number, since 121 + 22 + 311 + 210 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121223112103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 212227 + ... + 536177.

It is an arithmetic number, because the mean of its divisors is an integer number (10944313380).

Almost surely, 2^121223112102 is an apocalyptic number.

121223112102 is an abundant number, since it is smaller than the sum of its proper divisors (141440409018).

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

121223112102 is a wasteful number, since it uses less digits than its factorization.

121223112102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344748 (or 344745 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121223112102 its reverse (201211322121), we get a palindrome (322434434223).

The spelling of 121223112102 in words is "one hundred twenty-one billion, two hundred twenty-three million, one hundred twelve thousand, one hundred two".