21031202103211 has 8 divisors (see below), whose sum is σ = 22321478022480. Its totient is φ = 19746831337728.

The previous prime is 21031202103199. The next prime is 21031202103217. The reversal of 21031202103211 is 11230120213012.

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

It is not a de Polignac number, because 21031202103211 - 2¹⁵ = 21031202070443 is a prime.

It is a super-2 number, since 2×21031202103211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21031202103217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1476281106 + ... + 1476295351.

It is an arithmetic number, because the mean of its divisors is an integer number (2790184752810).

Almost surely, 2^{21031202103211} is an apocalyptic number.

21031202103211 is a deficient number, since it is larger than the sum of its proper divisors (1290275919269).

21031202103211 is a wasteful number, since it uses less digits than its factorization.

21031202103211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2952576893.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21031202103211 its reverse (11230120213012), we get a palindrome (32261322316223).

The spelling of 21031202103211 in words is "twenty-one trillion, thirty-one billion, two hundred two million, one hundred three thousand, two hundred eleven".