1211000220127 has 2 divisors, whose sum is σ = 1211000220128. Its totient is φ = 1211000220126.

The previous prime is 1211000220119. The next prime is 1211000220137. The reversal of 1211000220127 is 7210220001121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211000220127 - 2³ = 1211000220119 is a prime.

It is a super-2 number, since 2×1211000220127² (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 (1211000220137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605500110063 + 605500110064.

It is an arithmetic number, because the mean of its divisors is an integer number (605500110064).

Almost surely, 2^{1211000220127} is an apocalyptic number.

1211000220127 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211000220127 is an equidigital number, since it uses as much as digits as its factorization.

1211000220127 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 1211000220127 its reverse (7210220001121), we get a palindrome (8421220221248).

The spelling of 1211000220127 in words is "one trillion, two hundred eleven billion, two hundred twenty thousand, one hundred twenty-seven".