20120213101 has 2 divisors, whose sum is σ = 20120213102. Its totient is φ = 20120213100.

The previous prime is 20120213089. The next prime is 20120213111. The reversal of 20120213101 is 10131202102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19944783076 + 175430025 = 141226^2 + 13245^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120213101 - 2²¹ = 20118115949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120213111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060106550 + 10060106551.

It is an arithmetic number, because the mean of its divisors is an integer number (10060106551).

Almost surely, 2^20120213101 is an apocalyptic number.

It is an amenable number.

20120213101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120213101 is an equidigital number, since it uses as much as digits as its factorization.

20120213101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20120213101 its reverse (10131202102), we get a palindrome (30251415203).

The spelling of 20120213101 in words is "twenty billion, one hundred twenty million, two hundred thirteen thousand, one hundred one".