101209911901 has 4 divisors (see below), whose sum is σ = 115668470752. Its totient is φ = 86751353052.

The previous prime is 101209911899. The next prime is 101209911923. The reversal of 101209911901 is 109119902101.

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, and also an emirpimes, since its reverse is a distinct semiprime: 109119902101 = 7 ⋅15588557443.

It is not a de Polignac number, because 101209911901 - 2¹ = 101209911899 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101209911931) 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, 7229279415 + ... + 7229279428.

It is an arithmetic number, because the mean of its divisors is an integer number (28917117688).

Almost surely, 2^101209911901 is an apocalyptic number.

It is an amenable number.

101209911901 is a deficient number, since it is larger than the sum of its proper divisors (14458558851).

101209911901 is an equidigital number, since it uses as much as digits as its factorization.

101209911901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14458558850.

The product of its (nonzero) digits is 1458, while the sum is 34.

The spelling of 101209911901 in words is "one hundred one billion, two hundred nine million, nine hundred eleven thousand, nine hundred one".