121102211321221 has 32 divisors (see below), whose sum is σ = 131601882384000. Its totient is φ = 110776648889088.

The previous prime is 121102211321213. The next prime is 121102211321237. The reversal of 121102211321221 is 122123112201121.

It is not a de Polignac number, because 121102211321221 - 2³ = 121102211321213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121102211321192 and 121102211321201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121102211327221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 854512915 + ... + 854654623.

It is an arithmetic number, because the mean of its divisors is an integer number (4112558824500).

Almost surely, 2^{121102211321221} is an apocalyptic number.

It is an amenable number.

121102211321221 is a deficient number, since it is larger than the sum of its proper divisors (10499671062779).

121102211321221 is a wasteful number, since it uses less digits than its factorization.

121102211321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143173.

The product of its (nonzero) digits is 192, while the sum is 22.

Adding to 121102211321221 its reverse (122123112201121), we get a palindrome (243225323522342).

The spelling of 121102211321221 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred eleven million, three hundred twenty-one thousand, two hundred twenty-one".