101231140212 has 144 divisors (see below), whose sum is σ = 280752209920. Its totient is φ = 30635496000.

The previous prime is 101231140121. The next prime is 101231140237. The reversal of 101231140212 is 212041132101.

101231140212 is a `hidden beast` number, since 101 + 2 + 311 + 40 + 212 = 666.

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 47 ways as a sum of consecutive naturals, for example, 2160837 + ... + 2207187.

Almost surely, 2^101231140212 is an apocalyptic number.

101231140212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101231140212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140376104960).

101231140212 is an abundant number, since it is smaller than the sum of its proper divisors (179521069708).

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

101231140212 is a wasteful number, since it uses less digits than its factorization.

101231140212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46514 (or 46509 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 101231140212 its reverse (212041132101), we get a palindrome (313272272313).

The spelling of 101231140212 in words is "one hundred one billion, two hundred thirty-one million, one hundred forty thousand, two hundred twelve".