101121121242 has 48 divisors (see below), whose sum is σ = 221420996160. Its totient is φ = 33349522176.

The previous prime is 101121121223. The next prime is 101121121273. The reversal of 101121121242 is 242121121101.

It is a super-2 number, since 2×101121121242² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7820859 + ... + 7833777.

It is an arithmetic number, because the mean of its divisors is an integer number (4612937420).

Almost surely, 2^101121121242 is an apocalyptic number.

101121121242 is an abundant number, since it is smaller than the sum of its proper divisors (120299874918).

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

101121121242 is a wasteful number, since it uses less digits than its factorization.

101121121242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17507 (or 17504 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 101121121242 its reverse (242121121101), we get a palindrome (343242242343).

The spelling of 101121121242 in words is "one hundred one billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred forty-two".