21210201022011 has 8 divisors (see below), whose sum is σ = 28280309105664. Its totient is φ = 14140113476520.

The previous prime is 21210201022009. The next prime is 21210201022019. The reversal of 21210201022011 is 11022010201212.

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

It is not a de Polignac number, because 21210201022011 - 2¹ = 21210201022009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210201022019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2537151 + ... + 6989816.

It is an arithmetic number, because the mean of its divisors is an integer number (3535038638208).

Almost surely, 2^{21210201022011} is an apocalyptic number.

21210201022011 is a deficient number, since it is larger than the sum of its proper divisors (7070108083653).

21210201022011 is an equidigital number, since it uses as much as digits as its factorization.

21210201022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10269081.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21210201022011 its reverse (11022010201212), we get a palindrome (32232211223223).

The spelling of 21210201022011 in words is "twenty-one trillion, two hundred ten billion, two hundred one million, twenty-two thousand, eleven".