1201522143 has 8 divisors (see below), whose sum is σ = 1612782000. Its totient is φ = 795638528.

The previous prime is 1201522067. The next prime is 1201522169. The reversal of 1201522143 is 3412251021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201522143 - 2⁸ = 1201521887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201520143) 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, 1343538 + ... + 1344431.

It is an arithmetic number, because the mean of its divisors is an integer number (201597750).

Almost surely, 2^1201522143 is an apocalyptic number.

1201522143 is a deficient number, since it is larger than the sum of its proper divisors (411259857).

1201522143 is a wasteful number, since it uses less digits than its factorization.

1201522143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688121.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1201522143 is about 34662.9794305106. The cubic root of 1201522143 is about 1063.1076899795.

Adding to 1201522143 its reverse (3412251021), we get a palindrome (4613773164).

The spelling of 1201522143 in words is "one billion, two hundred one million, five hundred twenty-two thousand, one hundred forty-three".