1231200312210 has 192 divisors, whose sum is σ = 3564032524416. Its totient is φ = 292346496000.

The previous prime is 1231200312179. The next prime is 1231200312233. The reversal of 1231200312210 is 122130021321.

1231200312210 is a `hidden beast` number, since 1 + 23 + 120 + 0 + 312 + 210 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31514949 + ... + 31553991.

It is an arithmetic number, because the mean of its divisors is an integer number (18562669398).

Almost surely, 2^{1231200312210} is an apocalyptic number.

1231200312210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1231200312210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782016262208).

1231200312210 is an abundant number, since it is smaller than the sum of its proper divisors (2332832212206).

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

1231200312210 is a wasteful number, since it uses less digits than its factorization.

1231200312210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39721 (or 39718 counting only the distinct ones).

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

Adding to 1231200312210 its reverse (122130021321), we get a palindrome (1353330333531).

The spelling of 1231200312210 in words is "one trillion, two hundred thirty-one billion, two hundred million, three hundred twelve thousand, two hundred ten".