42121000223101 has 16 divisors (see below), whose sum is σ = 44274132403200. Its totient is φ = 39994696221568.

The previous prime is 42121000223059. The next prime is 42121000223129. The reversal of 42121000223101 is 10132200012124.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42121000223101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42121000223801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 179864955 + ... + 180098983.

It is an arithmetic number, because the mean of its divisors is an integer number (2767133275200).

Almost surely, 2^{42121000223101} is an apocalyptic number.

It is an amenable number.

42121000223101 is a deficient number, since it is larger than the sum of its proper divisors (2153132180099).

42121000223101 is a wasteful number, since it uses less digits than its factorization.

42121000223101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291308.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 42121000223101 its reverse (10132200012124), we get a palindrome (52253200235225).

The spelling of 42121000223101 in words is "forty-two trillion, one hundred twenty-one billion, two hundred twenty-three thousand, one hundred one".