121000021121101 has 4 divisors (see below), whose sum is σ = 121000134229632. Its totient is φ = 120999908012572.

The previous prime is 121000021121099. The next prime is 121000021121129. The reversal of 121000021121101 is 101121120000121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121000021121101 - 2¹ = 121000021121099 is a prime.

It is a super-2 number, since 2×121000021121101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121000021121401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54934141 + ... + 57094306.

It is an arithmetic number, because the mean of its divisors is an integer number (30250033557408).

Almost surely, 2^{121000021121101} is an apocalyptic number.

It is an amenable number.

121000021121101 is a deficient number, since it is larger than the sum of its proper divisors (113108531).

121000021121101 is a wasteful number, since it uses less digits than its factorization.

121000021121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113108530.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 121000021121101 its reverse (101121120000121), we get a palindrome (222121141121222).

The spelling of 121000021121101 in words is "one hundred twenty-one trillion, twenty-one million, one hundred twenty-one thousand, one hundred one".