1211112101077 has 2 divisors, whose sum is σ = 1211112101078. Its totient is φ = 1211112101076.

The previous prime is 1211112100997. The next prime is 1211112101137. The reversal of 1211112101077 is 7701012111121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 958938396516 + 252173704561 = 979254^2 + 502169^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211112101077 - 2¹⁹ = 1211111576789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211112141077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605556050538 + 605556050539.

It is an arithmetic number, because the mean of its divisors is an integer number (605556050539).

Almost surely, 2^{1211112101077} is an apocalyptic number.

It is an amenable number.

1211112101077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211112101077 is an equidigital number, since it uses as much as digits as its factorization.

1211112101077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196, while the sum is 25.

Adding to 1211112101077 its reverse (7701012111121), we get a palindrome (8912124212198).

The spelling of 1211112101077 in words is "one trillion, two hundred eleven billion, one hundred twelve million, one hundred one thousand, seventy-seven".