101721601015211 has 4 divisors (see below), whose sum is σ = 101724685109712. Its totient is φ = 101718516920712.

The previous prime is 101721601015141. The next prime is 101721601015217. The reversal of 101721601015211 is 112510106127101.

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

It is a cyclic number.

It is not a de Polignac number, because 101721601015211 - 2⁴² = 97323554504107 is a prime.

It is a super-2 number, since 2×101721601015211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101721601015217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1541997776 + ... + 1542063741.

It is an arithmetic number, because the mean of its divisors is an integer number (25431171277428).

Almost surely, 2^{101721601015211} is an apocalyptic number.

101721601015211 is a deficient number, since it is larger than the sum of its proper divisors (3084094501).

101721601015211 is an equidigital number, since it uses as much as digits as its factorization.

101721601015211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084094500.

The product of its (nonzero) digits is 840, while the sum is 29.

The spelling of 101721601015211 in words is "one hundred one trillion, seven hundred twenty-one billion, six hundred one million, fifteen thousand, two hundred eleven".