101221242342 has 64 divisors (see below), whose sum is σ = 234040036608. Its totient is φ = 28843776000.

The previous prime is 101221242301. The next prime is 101221242347. The reversal of 101221242342 is 243242122101.

101221242342 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221242347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1275342 + ... + 1352382.

It is an arithmetic number, because the mean of its divisors is an integer number (3656875572).

Almost surely, 2^101221242342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101221242342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117020018304).

101221242342 is an abundant number, since it is smaller than the sum of its proper divisors (132818794266).

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

101221242342 is a wasteful number, since it uses less digits than its factorization.

101221242342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78245.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 101221242342 its reverse (243242122101), we get a palindrome (344463364443).

The spelling of 101221242342 in words is "one hundred one billion, two hundred twenty-one million, two hundred forty-two thousand, three hundred forty-two".