121201102002021 has 8 divisors (see below), whose sum is σ = 161608608246624. Its totient is φ = 80797165212720.

The previous prime is 121201102001951. The next prime is 121201102002073. The reversal of 121201102002021 is 120200201102121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121201102002021 - 2¹⁸ = 121201101739877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201102002221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 892284595 + ... + 892420416.

It is an arithmetic number, because the mean of its divisors is an integer number (20201076030828).

Almost surely, 2^{121201102002021} is an apocalyptic number.

It is an amenable number.

121201102002021 is a deficient number, since it is larger than the sum of its proper divisors (40407506244603).

121201102002021 is a wasteful number, since it uses less digits than its factorization.

121201102002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784727651.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121201102002021 its reverse (120200201102121), we get a palindrome (241401303104142).

The spelling of 121201102002021 in words is "one hundred twenty-one trillion, two hundred one billion, one hundred two million, two thousand, twenty-one".