21315101036611 has 8 divisors (see below), whose sum is σ = 21772979136000. Its totient is φ = 20857404825288.

The previous prime is 21315101036599. The next prime is 21315101036627. The reversal of 21315101036611 is 11663010151312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21315101036611 - 2⁷ = 21315101036483 is a prime.

It is a super-3 number, since 3×21315101036611³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21315101034611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45235111 + ... + 45703888.

It is an arithmetic number, because the mean of its divisors is an integer number (2721622392000).

Almost surely, 2^{21315101036611} is an apocalyptic number.

21315101036611 is a deficient number, since it is larger than the sum of its proper divisors (457878099389).

21315101036611 is an equidigital number, since it uses as much as digits as its factorization.

21315101036611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90944033.

The product of its (nonzero) digits is 3240, while the sum is 31.

Adding to 21315101036611 its reverse (11663010151312), we get a palindrome (32978111187923).

The spelling of 21315101036611 in words is "twenty-one trillion, three hundred fifteen billion, one hundred one million, thirty-six thousand, six hundred eleven".