1201216154 has 16 divisors (see below), whose sum is σ = 1809656640. Its totient is φ = 598003200.

The previous prime is 1201216153. The next prime is 1201216169. The reversal of 1201216154 is 4516121021.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1201216153) 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, 827129 + ... + 828579.

It is an arithmetic number, because the mean of its divisors is an integer number (113103540).

Almost surely, 2^1201216154 is an apocalyptic number.

1201216154 is a deficient number, since it is larger than the sum of its proper divisors (608440486).

1201216154 is a wasteful number, since it uses less digits than its factorization.

1201216154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2965.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1201216154 is about 34658.5653771185. The cubic root of 1201216154 is about 1063.0174358856.

Adding to 1201216154 its reverse (4516121021), we get a palindrome (5717337175).

The spelling of 1201216154 in words is "one billion, two hundred one million, two hundred sixteen thousand, one hundred fifty-four".