1200121012212 has 24 divisors (see below), whose sum is σ = 2922033769536. Its totient is φ = 382647279168.

The previous prime is 1200121012163. The next prime is 1200121012213. The reversal of 1200121012212 is 2122101210021.

It is a junction number, because it is equal to n+sod(n) for n = 1200121012191 and 1200121012200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200121012213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2174131993 + ... + 2174132544.

It is an arithmetic number, because the mean of its divisors is an integer number (121751407064).

Almost surely, 2^{1200121012212} is an apocalyptic number.

1200121012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1200121012212 is an abundant number, since it is smaller than the sum of its proper divisors (1721912757324).

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

1200121012212 is a wasteful number, since it uses less digits than its factorization.

1200121012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4348264567 (or 4348264565 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1200121012212 its reverse (2122101210021), we get a palindrome (3322222222233).

The spelling of 1200121012212 in words is "one trillion, two hundred billion, one hundred twenty-one million, twelve thousand, two hundred twelve".