20100021131207 has 2 divisors, whose sum is σ = 20100021131208. Its totient is φ = 20100021131206.

The previous prime is 20100021131167. The next prime is 20100021131293. The reversal of 20100021131207 is 70213112000102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20100021131207 - 2⁶ = 20100021131143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20100021136207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050010565603 + 10050010565604.

It is an arithmetic number, because the mean of its divisors is an integer number (10050010565604).

Almost surely, 2^{20100021131207} is an apocalyptic number.

20100021131207 is a deficient number, since it is larger than the sum of its proper divisors (1).

20100021131207 is an equidigital number, since it uses as much as digits as its factorization.

20100021131207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

Adding to 20100021131207 its reverse (70213112000102), we get a palindrome (90313133131309).

The spelling of 20100021131207 in words is "twenty trillion, one hundred billion, twenty-one million, one hundred thirty-one thousand, two hundred seven".