1201315213550 has 24 divisors (see below), whose sum is σ = 2234742055896. Its totient is φ = 480462481440.

The previous prime is 1201315213463. The next prime is 1201315213561. The reversal of 1201315213550 is 553125131021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1207664 + ... + 1964963.

It is an arithmetic number, because the mean of its divisors is an integer number (93114252329).

Almost surely, 2^{1201315213550} is an apocalyptic number.

1201315213550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201315213550 is a deficient number, since it is larger than the sum of its proper divisors (1033426842346).

1201315213550 is a wasteful number, since it uses less digits than its factorization.

1201315213550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3180212 (or 3180207 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The spelling of 1201315213550 in words is "one trillion, two hundred one billion, three hundred fifteen million, two hundred thirteen thousand, five hundred fifty".