121221021210201 has 12 divisors (see below), whose sum is σ = 191014942513200. Its totient is φ = 73467285581880.

The previous prime is 121221021210199. The next prime is 121221021210221. The reversal of 121221021210201 is 102012120122121.

121221021210201 is a `hidden beast` number, since 1 + 21 + 2 + 210 + 21 + 210 + 201 = 666.

It is not a de Polignac number, because 121221021210201 - 2¹ = 121221021210199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121221021210221) 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, 612227379751 + ... + 612227379948.

It is an arithmetic number, because the mean of its divisors is an integer number (15917911876100).

Almost surely, 2^{121221021210201} is an apocalyptic number.

121221021210201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121221021210201 is a deficient number, since it is larger than the sum of its proper divisors (69793921302999).

121221021210201 is a wasteful number, since it uses less digits than its factorization.

121221021210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1224454759716 (or 1224454759713 counting only the distinct ones).

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

Adding to 121221021210201 its reverse (102012120122121), we get a palindrome (223233141332322).

The spelling of 121221021210201 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, twenty-one million, two hundred ten thousand, two hundred one".