21201022201011 has 32 divisors (see below), whose sum is σ = 29521123107840. Its totient is φ = 13508473228800.

The previous prime is 21201022200989. The next prime is 21201022201013. The reversal of 21201022201011 is 11010222010212.

It is not a de Polignac number, because 21201022201011 - 2¹⁴ = 21201022184627 is a prime.

It is a super-2 number, since 2×21201022201011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21201022201013) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 787513831 + ... + 787540751.

It is an arithmetic number, because the mean of its divisors is an integer number (922535097120).

Almost surely, 2^{21201022201011} is an apocalyptic number.

21201022201011 is a deficient number, since it is larger than the sum of its proper divisors (8320100906829).

21201022201011 is a wasteful number, since it uses less digits than its factorization.

21201022201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35827.

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

Adding to 21201022201011 its reverse (11010222010212), we get a palindrome (32211244211223).

The spelling of 21201022201011 in words is "twenty-one trillion, two hundred one billion, twenty-two million, two hundred one thousand, eleven".