1201321203000 has 64 divisors (see below), whose sum is σ = 3748122162720. Its totient is φ = 320352320000.

The previous prime is 1201321202999. The next prime is 1201321203011. The reversal of 1201321203000 is 3021231021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200217201 + ... + 200223200.

Almost surely, 2^{1201321203000} is an apocalyptic number.

1201321203000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201321203000 is an abundant number, since it is smaller than the sum of its proper divisors (2546800959720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201321203000 is a wasteful number, since it uses less digits than its factorization.

1201321203000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400440425 (or 400440411 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1201321203000 its reverse (3021231021), we get a palindrome (1204342434021).

The spelling of 1201321203000 in words is "one trillion, two hundred one billion, three hundred twenty-one million, two hundred three thousand".