812101272234812 has 192 divisors, whose sum is σ = 1820972418693120. Its totient is φ = 308825515966464.

The previous prime is 812101272234809. The next prime is 812101272234821. The reversal of 812101272234812 is 218432272101218.

It is a happy number.

It is a super-3 number, since 3×812101272234812³ (a number of 46 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1966297553 + ... + 1966710519.

It is an arithmetic number, because the mean of its divisors is an integer number (9484231347360).

Almost surely, 2^{812101272234812} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 812101272234812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910486209346560).

812101272234812 is an abundant number, since it is smaller than the sum of its proper divisors (1008871146458308).

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

812101272234812 is a wasteful number, since it uses less digits than its factorization.

812101272234812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416380 (or 416378 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 44.

The spelling of 812101272234812 in words is "eight hundred twelve trillion, one hundred one billion, two hundred seventy-two million, two hundred thirty-four thousand, eight hundred twelve".