1201212321300 has 108 divisors (see below), whose sum is σ = 3802412122236. Its totient is φ = 317151744000.

The previous prime is 1201212321293. The next prime is 1201212321319. The reversal of 1201212321300 is 31232121021.

1201212321300 is a `hidden beast` number, since 1 + 20 + 1 + 21 + 2 + 321 + 300 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 99883809936 + 1101328511364 = 316044^2 + 1049442^2 .

It is a super-2 number, since 2×1201212321300² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6516429 + ... + 6698228.

Almost surely, 2^{1201212321300} is an apocalyptic number.

1201212321300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201212321300 is an abundant number, since it is smaller than the sum of its proper divisors (2601199800936).

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

1201212321300 is a wasteful number, since it uses less digits than its factorization.

1201212321300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13214778 (or 13214768 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1201212321300 its reverse (31232121021), we get a palindrome (1232444442321).

The spelling of 1201212321300 in words is "one trillion, two hundred one billion, two hundred twelve million, three hundred twenty-one thousand, three hundred".