20120212151101 has 2 divisors, whose sum is σ = 20120212151102. Its totient is φ = 20120212151100.

The previous prime is 20120212151059. The next prime is 20120212151153. The reversal of 20120212151101 is 10115121202102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16629390747225 + 3490821403876 = 4077915^2 + 1868374^2 .

It is a cyclic number.

It is not a de Polignac number, because 20120212151101 - 2¹⁹ = 20120211626813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20120212151191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060106075550 + 10060106075551.

It is an arithmetic number, because the mean of its divisors is an integer number (10060106075551).

Almost surely, 2^{20120212151101} is an apocalyptic number.

It is an amenable number.

20120212151101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120212151101 is an equidigital number, since it uses as much as digits as its factorization.

20120212151101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 19.

Adding to 20120212151101 its reverse (10115121202102), we get a palindrome (30235333353203).

The spelling of 20120212151101 in words is "twenty trillion, one hundred twenty billion, two hundred twelve million, one hundred fifty-one thousand, one hundred one".