101220202001 has 4 divisors (see below), whose sum is σ = 101240294400. Its totient is φ = 101200109604.

The previous prime is 101220201991. The next prime is 101220202021. The reversal of 101220202001 is 100202022101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101220202001 - 2¹⁴ = 101220185617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101220202021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10038641 + ... + 10048718.

It is an arithmetic number, because the mean of its divisors is an integer number (25310073600).

Almost surely, 2^101220202001 is an apocalyptic number.

It is an amenable number.

101220202001 is a deficient number, since it is larger than the sum of its proper divisors (20092399).

101220202001 is an equidigital number, since it uses as much as digits as its factorization.

101220202001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20092398.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 101220202001 its reverse (100202022101), we get a palindrome (201422224102).

The spelling of 101220202001 in words is "one hundred one billion, two hundred twenty million, two hundred two thousand, one".