121203001112121 has 96 divisors (see below), whose sum is σ = 197166486037248. Its totient is φ = 71343726981120.

The previous prime is 121203001112119. The next prime is 121203001112201. The reversal of 121203001112121 is 121211100302121.

It is a happy number.

121203001112121 is a `hidden beast` number, since 1 + 21 + 20 + 300 + 111 + 212 + 1 = 666.

It is not a de Polignac number, because 121203001112121 - 2¹ = 121203001112119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121203001112094 and 121203001112103.

It is not an unprimeable number, because it can be changed into a prime (121203001182121) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 73673085 + ... + 75300261.

It is an arithmetic number, because the mean of its divisors is an integer number (2053817562888).

Almost surely, 2^{121203001112121} is an apocalyptic number.

It is an amenable number.

121203001112121 is a deficient number, since it is larger than the sum of its proper divisors (75963484925127).

121203001112121 is a wasteful number, since it uses less digits than its factorization.

121203001112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627631 (or 1627628 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 121203001112121 its reverse (121211100302121), we get a palindrome (242414101414242).

The spelling of 121203001112121 in words is "one hundred twenty-one trillion, two hundred three billion, one million, one hundred twelve thousand, one hundred twenty-one".