11211220212007 has 2 divisors, whose sum is σ = 11211220212008. Its totient is φ = 11211220212006.

The previous prime is 11211220211969. The next prime is 11211220212013. The reversal of 11211220212007 is 70021202211211.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11211220212007 is a prime.

It is a super-2 number, since 2×11211220212007² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11211220212607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5605610106003 + 5605610106004.

It is an arithmetic number, because the mean of its divisors is an integer number (5605610106004).

Almost surely, 2^{11211220212007} is an apocalyptic number.

11211220212007 is a deficient number, since it is larger than the sum of its proper divisors (1).

11211220212007 is an equidigital number, since it uses as much as digits as its factorization.

11211220212007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 22.

Adding to 11211220212007 its reverse (70021202211211), we get a palindrome (81232422423218).

The spelling of 11211220212007 in words is "eleven trillion, two hundred eleven billion, two hundred twenty million, two hundred twelve thousand, seven".