121102221102012 has 72 divisors (see below), whose sum is σ = 310382481374784. Its totient is φ = 39805503998976.

The previous prime is 121102221101909. The next prime is 121102221102053. The reversal of 121102221102012 is 210201122201121.

121102221102012 is a `hidden beast` number, since 121 + 10 + 222 + 110 + 201 + 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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6566148 + ... + 16891380.

It is an arithmetic number, because the mean of its divisors is an integer number (4310867796872).

Almost surely, 2^{121102221102012} is an apocalyptic number.

121102221102012 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 121102221102012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155191240687392).

121102221102012 is an abundant number, since it is smaller than the sum of its proper divisors (189280260272772).

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

121102221102012 is a wasteful number, since it uses less digits than its factorization.

121102221102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10329779 (or 10329774 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121102221102012 its reverse (210201122201121), we get a palindrome (331303343303133).

The spelling of 121102221102012 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred twenty-one million, one hundred two thousand, twelve".