1202121100112 has 80 divisors (see below), whose sum is σ = 2490037033680. Its totient is φ = 561168384000.

The previous prime is 1202121100109. The next prime is 1202121100121. The reversal of 1202121100112 is 2110011212021.

It can be written as a sum of positive squares in 8 ways, for example, as 362471427136 + 839649672976 = 602056^2 + 916324^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1870112 + ... + 2429312.

It is an arithmetic number, because the mean of its divisors is an integer number (31125462921).

Almost surely, 2^{1202121100112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1202121100112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245018516840).

1202121100112 is an abundant number, since it is smaller than the sum of its proper divisors (1287915933568).

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

1202121100112 is a wasteful number, since it uses less digits than its factorization.

1202121100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559392 (or 559386 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1202121100112 its reverse (2110011212021), we get a palindrome (3312132312133).

It can be divided in two parts, 12021 and 21100112, that multiplied together give a palindrome (253644446352).

The spelling of 1202121100112 in words is "one trillion, two hundred two billion, one hundred twenty-one million, one hundred thousand, one hundred twelve".