20110021207 has 2 divisors, whose sum is σ = 20110021208. Its totient is φ = 20110021206.

The previous prime is 20110021201. The next prime is 20110021213. The reversal of 20110021207 is 70212001102.

It is a balanced prime because it is at equal distance from previous prime (20110021201) and next prime (20110021213).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20110021207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20110021201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055010603 + 10055010604.

It is an arithmetic number, because the mean of its divisors is an integer number (10055010604).

Almost surely, 2^20110021207 is an apocalyptic number.

20110021207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110021207 is an equidigital number, since it uses as much as digits as its factorization.

20110021207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 16.

Adding to 20110021207 its reverse (70212001102), we get a palindrome (90322022309).

The spelling of 20110021207 in words is "twenty billion, one hundred ten million, twenty-one thousand, two hundred seven".