101211311142 has 48 divisors (see below), whose sum is σ = 222945828768. Its totient is φ = 33175146240.

The previous prime is 101211311111. The next prime is 101211311143. The reversal of 101211311142 is 241113112101.

101211311142 is a `hidden beast` number, since 1 + 0 + 1 + 211 + 311 + 142 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101211311143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5022078 + ... + 5042190.

It is an arithmetic number, because the mean of its divisors is an integer number (4644704766).

Almost surely, 2^101211311142 is an apocalyptic number.

101211311142 is an abundant number, since it is smaller than the sum of its proper divisors (121734517626).

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

101211311142 is a wasteful number, since it uses less digits than its factorization.

101211311142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24765 (or 24762 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 101211311142 its reverse (241113112101), we get a palindrome (342324423243).

The spelling of 101211311142 in words is "one hundred one billion, two hundred eleven million, three hundred eleven thousand, one hundred forty-two".