120221212220077 has 2 divisors, whose sum is σ = 120221212220078. Its totient is φ = 120221212220076.

The previous prime is 120221212219987. The next prime is 120221212220111. The reversal of 120221212220077 is 770022212122021.

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., 83572306120521 + 36648906099556 = 9141789^2 + 6053834^2 .

It is a cyclic number.

It is not a de Polignac number, because 120221212220077 - 2²⁷ = 120221078002349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120221212290077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110606110038 + 60110606110039.

It is an arithmetic number, because the mean of its divisors is an integer number (60110606110039).

Almost surely, 2^{120221212220077} is an apocalyptic number.

It is an amenable number.

120221212220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221212220077 is an equidigital number, since it uses as much as digits as its factorization.

120221212220077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 31.

Adding to 120221212220077 its reverse (770022212122021), we get a palindrome (890243424342098).

The spelling of 120221212220077 in words is "one hundred twenty trillion, two hundred twenty-one billion, two hundred twelve million, two hundred twenty thousand, seventy-seven".