102120000211081 has 2 divisors, whose sum is σ = 102120000211082. Its totient is φ = 102120000211080.

The previous prime is 102120000211063. The next prime is 102120000211189. The reversal of 102120000211081 is 180112000021201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53882808121081 + 48237192090000 = 7340491^2 + 6945300^2 .

It is a cyclic number.

It is not a de Polignac number, because 102120000211081 - 2³¹ = 102117852727433 is a prime.

It is a super-3 number, since 3×102120000211081³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (102120000611081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060000105540 + 51060000105541.

It is an arithmetic number, because the mean of its divisors is an integer number (51060000105541).

Almost surely, 2^{102120000211081} is an apocalyptic number.

It is an amenable number.

102120000211081 is a deficient number, since it is larger than the sum of its proper divisors (1).

102120000211081 is an equidigital number, since it uses as much as digits as its factorization.

102120000211081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 102120000211081 its reverse (180112000021201), we get a palindrome (282232000232282).

The spelling of 102120000211081 in words is "one hundred two trillion, one hundred twenty billion, two hundred eleven thousand, eighty-one".