102101212210201 has 4 divisors (see below), whose sum is σ = 102140167272804. Its totient is φ = 102062257147600.

The previous prime is 102101212210171. The next prime is 102101212210211. The reversal of 102101212210201 is 102012212101201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46728489758976 + 55372722451225 = 6835824^2 + 7441285^2 .

It is a cyclic number.

It is not a de Polignac number, because 102101212210201 - 2⁷ = 102101212210073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102101212210211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19477527370 + ... + 19477532611.

It is an arithmetic number, because the mean of its divisors is an integer number (25535041818201).

Almost surely, 2^{102101212210201} is an apocalyptic number.

It is an amenable number.

102101212210201 is a deficient number, since it is larger than the sum of its proper divisors (38955062603).

102101212210201 is an equidigital number, since it uses as much as digits as its factorization.

102101212210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38955062602.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102101212210201 its reverse (102012212101201), we get a palindrome (204113424311402).

The spelling of 102101212210201 in words is "one hundred two trillion, one hundred one billion, two hundred twelve million, two hundred ten thousand, two hundred one".