10101001220001 has 96 divisors (see below), whose sum is σ = 16575407896320. Its totient is φ = 5891544502272.

The previous prime is 10101001219993. The next prime is 10101001220017. The reversal of 10101001220001 is 10002210010101.

It is a happy number.

It is not a de Polignac number, because 10101001220001 - 2³ = 10101001219993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10101001220041) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 111799221 + ... + 111889533.

It is an arithmetic number, because the mean of its divisors is an integer number (172660498920).

Almost surely, 2^{10101001220001} is an apocalyptic number.

It is an amenable number.

10101001220001 is a deficient number, since it is larger than the sum of its proper divisors (6474406676319).

10101001220001 is a wasteful number, since it uses less digits than its factorization.

10101001220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91255 (or 91252 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10101001220001 its reverse (10002210010101), we get a palindrome (20103211230102).

The spelling of 10101001220001 in words is "ten trillion, one hundred one billion, one million, two hundred twenty thousand, one".