1212211001077 has 2 divisors, whose sum is σ = 1212211001078. Its totient is φ = 1212211001076.

The previous prime is 1212211001047. The next prime is 1212211001149. The reversal of 1212211001077 is 7701001122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 756263293956 + 455947707121 = 869634^2 + 675239^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212211001077 - 2²⁷ = 1212076783349 is a prime.

It is a super-2 number, since 2×1212211001077² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212211001047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606105500538 + 606105500539.

It is an arithmetic number, because the mean of its divisors is an integer number (606105500539).

Almost surely, 2^{1212211001077} is an apocalyptic number.

It is an amenable number.

1212211001077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212211001077 is an equidigital number, since it uses as much as digits as its factorization.

1212211001077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 392, while the sum is 25.

Adding to 1212211001077 its reverse (7701001122121), we get a palindrome (8913212123198).

The spelling of 1212211001077 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one thousand, seventy-seven".