120212000021221 has 2 divisors, whose sum is σ = 120212000021222. Its totient is φ = 120212000021220.

The previous prime is 120212000021209. The next prime is 120212000021231. The reversal of 120212000021221 is 122120000212021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117763494868321 + 2448505152900 = 10851889^2 + 1564770^2 .

It is a cyclic number.

It is not a de Polignac number, because 120212000021221 - 2⁷ = 120212000021093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120212000021195 and 120212000021204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120212000021231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60106000010610 + 60106000010611.

It is an arithmetic number, because the mean of its divisors is an integer number (60106000010611).

Almost surely, 2^{120212000021221} is an apocalyptic number.

It is an amenable number.

120212000021221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120212000021221 is an equidigital number, since it uses as much as digits as its factorization.

120212000021221 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 16.

Adding to 120212000021221 its reverse (122120000212021), we get a palindrome (242332000233242).

The spelling of 120212000021221 in words is "one hundred twenty trillion, two hundred twelve billion, twenty-one thousand, two hundred twenty-one".