1200120351 has 16 divisors (see below), whose sum is σ = 1695696000. Its totient is φ = 752878368.

The previous prime is 1200120349. The next prime is 1200120401. The reversal of 1200120351 is 1530210021.

It is not a de Polignac number, because 1200120351 - 2¹ = 1200120349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1200120351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200120751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62161 + ... + 79146.

It is an arithmetic number, because the mean of its divisors is an integer number (105981000).

Almost surely, 2^1200120351 is an apocalyptic number.

1200120351 is a deficient number, since it is larger than the sum of its proper divisors (495575649).

1200120351 is a wasteful number, since it uses less digits than its factorization.

1200120351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141478.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 1200120351 is about 34642.7532248810. The cubic root of 1200120351 is about 1062.6940935565.

Adding to 1200120351 its reverse (1530210021), we get a palindrome (2730330372).

The spelling of 1200120351 in words is "one billion, two hundred million, one hundred twenty thousand, three hundred fifty-one".