121233102012 has 72 divisors (see below), whose sum is σ = 338541315840. Its totient is φ = 36272265120.

The previous prime is 121233101999. The next prime is 121233102013. The reversal of 121233102012 is 210201332121.

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 (121233102013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1906338 + ... + 1968905.

It is an arithmetic number, because the mean of its divisors is an integer number (4701962720).

Almost surely, 2^121233102012 is an apocalyptic number.

121233102012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121233102012 is an abundant number, since it is smaller than the sum of its proper divisors (217308213828).

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

121233102012 is a wasteful number, since it uses less digits than its factorization.

121233102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3875343 (or 3875338 counting only the distinct ones).

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

Adding to 121233102012 its reverse (210201332121), we get a palindrome (331434434133).

The spelling of 121233102012 in words is "one hundred twenty-one billion, two hundred thirty-three million, one hundred two thousand, twelve".