101212122121201 has 32 divisors (see below), whose sum is σ = 126616584019968. Its totient is φ = 78763584522240.

The previous prime is 101212122121193. The next prime is 101212122121213. The reversal of 101212122121201 is 102121221212101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101212122121201 - 2³ = 101212122121193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (101212122122201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126257616 + ... + 127056718.

It is an arithmetic number, because the mean of its divisors is an integer number (3956768250624).

Almost surely, 2^{101212122121201} is an apocalyptic number.

It is an amenable number.

101212122121201 is a deficient number, since it is larger than the sum of its proper divisors (25404461898767).

101212122121201 is a wasteful number, since it uses less digits than its factorization.

101212122121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822001.

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

Adding to 101212122121201 its reverse (102121221212101), we get a palindrome (203333343333302).

The spelling of 101212122121201 in words is "one hundred one trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred one".