121102201010221 has 2 divisors, whose sum is σ = 121102201010222. Its totient is φ = 121102201010220.

The previous prime is 121102201010207. The next prime is 121102201010261. The reversal of 121102201010221 is 122010102201121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107479561545225 + 13622639464996 = 10367235^2 + 3690886^2 .

It is an emirp because it is prime and its reverse (122010102201121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121102201010221 - 2¹⁵ = 121102200977453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121102201010195 and 121102201010204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121102201010261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551100505110 + 60551100505111.

It is an arithmetic number, because the mean of its divisors is an integer number (60551100505111).

Almost surely, 2^{121102201010221} is an apocalyptic number.

It is an amenable number.

121102201010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102201010221 is an equidigital number, since it uses as much as digits as its factorization.

121102201010221 is an evil number, because the sum of its binary digits is even.

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

Adding to 121102201010221 its reverse (122010102201121), we get a palindrome (243112303211342).

The spelling of 121102201010221 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred one million, ten thousand, two hundred twenty-one".