1211222100007 has 2 divisors, whose sum is σ = 1211222100008. Its totient is φ = 1211222100006.

The previous prime is 1211222099977. The next prime is 1211222100029. The reversal of 1211222100007 is 7000012221121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211222100007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1211222100037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605611050003 + 605611050004.

It is an arithmetic number, because the mean of its divisors is an integer number (605611050004).

Almost surely, 2^{1211222100007} is an apocalyptic number.

1211222100007 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211222100007 is an equidigital number, since it uses as much as digits as its factorization.

1211222100007 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 1211222100007 its reverse (7000012221121), we get a palindrome (8211234321128).

The spelling of 1211222100007 in words is "one trillion, two hundred eleven billion, two hundred twenty-two million, one hundred thousand, seven".