101421234243 has 240 divisors, whose sum is σ = 192559825920. Its totient is φ = 52854996096.

The previous prime is 101421234221. The next prime is 101421234361. The reversal of 101421234243 is 342432124101.

101421234243 is a `hidden beast` number, since 1 + 0 + 1 + 421 + 234 + 2 + 4 + 3 = 666.

It is not a de Polignac number, because 101421234243 - 2¹³ = 101421226051 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (101421234203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 454803630 + ... + 454803852.

It is an arithmetic number, because the mean of its divisors is an integer number (802332608).

Almost surely, 2^101421234243 is an apocalyptic number.

101421234243 is a deficient number, since it is larger than the sum of its proper divisors (91138591677).

101421234243 is a wasteful number, since it uses less digits than its factorization.

101421234243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 101421234243 its reverse (342432124101), we get a palindrome (443853358344).

The spelling of 101421234243 in words is "one hundred one billion, four hundred twenty-one million, two hundred thirty-four thousand, two hundred forty-three".