121022210021201 has 4 divisors (see below), whose sum is σ = 121524376868004. Its totient is φ = 120520043174400.

The previous prime is 121022210021179. The next prime is 121022210021221. The reversal of 121022210021201 is 102120012220121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55866640411201 + 65155569610000 = 7474399^2 + 8071900^2 .

It is a cyclic number.

It is not a de Polignac number, because 121022210021201 - 2⁶ = 121022210021137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121022210021201.

It is not an unprimeable number, because it can be changed into a prime (121022210021221) 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, 251083423040 + ... + 251083423521.

It is an arithmetic number, because the mean of its divisors is an integer number (30381094217001).

Almost surely, 2^{121022210021201} is an apocalyptic number.

It is an amenable number.

121022210021201 is a deficient number, since it is larger than the sum of its proper divisors (502166846803).

121022210021201 is an equidigital number, since it uses as much as digits as its factorization.

121022210021201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502166846802.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 121022210021201 its reverse (102120012220121), we get a palindrome (223142222241322).

The spelling of 121022210021201 in words is "one hundred twenty-one trillion, twenty-two billion, two hundred ten million, twenty-one thousand, two hundred one".