121121230142 has 24 divisors (see below), whose sum is σ = 204344080248. Its totient is φ = 53774748720.

The previous prime is 121121230141. The next prime is 121121230159. The reversal of 121121230142 is 241032121121.

It is a super-2 number, since 2×121121230142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121230141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5809373 + ... + 5830184.

It is an arithmetic number, because the mean of its divisors is an integer number (8514336677).

Almost surely, 2^121121230142 is an apocalyptic number.

121121230142 is a deficient number, since it is larger than the sum of its proper divisors (83222850106).

121121230142 is a wasteful number, since it uses less digits than its factorization.

121121230142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11639624 (or 11639613 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 121121230142 its reverse (241032121121), we get a palindrome (362153351263).

The spelling of 121121230142 in words is "one hundred twenty-one billion, one hundred twenty-one million, two hundred thirty thousand, one hundred forty-two".