7201121121212 has 6 divisors (see below), whose sum is σ = 12601961962128. Its totient is φ = 3600560560604.

The previous prime is 7201121121163. The next prime is 7201121121217. The reversal of 7201121121212 is 2121211211027.

It is a super-2 number, since 2×7201121121212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7201121121217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 900140140148 + ... + 900140140155.

It is an arithmetic number, because the mean of its divisors is an integer number (2100326993688).

Almost surely, 2^{7201121121212} is an apocalyptic number.

It is an amenable number.

7201121121212 is a deficient number, since it is larger than the sum of its proper divisors (5400840840916).

7201121121212 is a wasteful number, since it uses less digits than its factorization.

7201121121212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1800280280307 (or 1800280280305 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 7201121121212 its reverse (2121211211027), we get a palindrome (9322332332239).

The spelling of 7201121121212 in words is "seven trillion, two hundred one billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twelve".