120202110021221 has 2 divisors, whose sum is σ = 120202110021222. Its totient is φ = 120202110021220.

The previous prime is 120202110021197. The next prime is 120202110021229. The reversal of 120202110021221 is 122120011202021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89781215337025 + 30420894684196 = 9475295^2 + 5515514^2 .

It is a cyclic number.

It is not a de Polignac number, because 120202110021221 - 2⁶ = 120202110021157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120202110021221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120202110021229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60101055010610 + 60101055010611.

It is an arithmetic number, because the mean of its divisors is an integer number (60101055010611).

Almost surely, 2^{120202110021221} is an apocalyptic number.

It is an amenable number.

120202110021221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120202110021221 is an equidigital number, since it uses as much as digits as its factorization.

120202110021221 is an evil number, because the sum of its binary digits is even.

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

Adding to 120202110021221 its reverse (122120011202021), we get a palindrome (242322121223242).

The spelling of 120202110021221 in words is "one hundred twenty trillion, two hundred two billion, one hundred ten million, twenty-one thousand, two hundred twenty-one".