121001020221121 has 4 divisors (see below), whose sum is σ = 121574484772144. Its totient is φ = 120427555670100.

The previous prime is 121001020221119. The next prime is 121001020221143. The reversal of 121001020221121 is 121122020100121.

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 121001020221121 - 2¹ = 121001020221119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121001020221095 and 121001020221104.

It is not an unprimeable number, because it can be changed into a prime (121001020225121) 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, 286732275195 + ... + 286732275616.

It is an arithmetic number, because the mean of its divisors is an integer number (30393621193036).

Almost surely, 2^{121001020221121} is an apocalyptic number.

It is an amenable number.

121001020221121 is a deficient number, since it is larger than the sum of its proper divisors (573464551023).

121001020221121 is an equidigital number, since it uses as much as digits as its factorization.

121001020221121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573464551022.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121001020221121 its reverse (121122020100121), we get a palindrome (242123040321242).

The spelling of 121001020221121 in words is "one hundred twenty-one trillion, one billion, twenty million, two hundred twenty-one thousand, one hundred twenty-one".