121021001022021 has 8 divisors (see below), whose sum is σ = 162172195675200. Its totient is φ = 80275236858432.

The previous prime is 121021001022007. The next prime is 121021001022023. The reversal of 121021001022021 is 120220100120121.

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

It is not a de Polignac number, because 121021001022021 - 2³⁸ = 120746123115077 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021001022023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101357621700 + ... + 101357622893.

It is an arithmetic number, because the mean of its divisors is an integer number (20271524459400).

Almost surely, 2^{121021001022021} is an apocalyptic number.

It is an amenable number.

121021001022021 is a deficient number, since it is larger than the sum of its proper divisors (41151194653179).

121021001022021 is a wasteful number, since it uses less digits than its factorization.

121021001022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202715244795.

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

Adding to 121021001022021 its reverse (120220100120121), we get a palindrome (241241101142142).

The spelling of 121021001022021 in words is "one hundred twenty-one trillion, twenty-one billion, one million, twenty-two thousand, twenty-one".