121002222012 has 96 divisors (see below), whose sum is σ = 326085118464. Its totient is φ = 34207488000.

The previous prime is 121002221999. The next prime is 121002222013. The reversal of 121002222012 is 210222200121.

It is a junction number, because it is equal to n+sod(n) for n = 121002221982 and 121002222000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121002222013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5694087 + ... + 5715297.

It is an arithmetic number, because the mean of its divisors is an integer number (3396719984).

Almost surely, 2^121002222012 is an apocalyptic number.

121002222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121002222012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163042559232).

121002222012 is an abundant number, since it is smaller than the sum of its proper divisors (205082896452).

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

121002222012 is a wasteful number, since it uses less digits than its factorization.

121002222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21939 (or 21937 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 121002222012 its reverse (210222200121), we get a palindrome (331224422133).

The spelling of 121002222012 in words is "one hundred twenty-one billion, two million, two hundred twenty-two thousand, twelve".