201022021011 has 16 divisors (see below), whose sum is σ = 322441337600. Its totient is φ = 108823951008.

The previous prime is 201022021009. The next prime is 201022021051. The reversal of 201022021011 is 110120220102.

It is not a de Polignac number, because 201022021011 - 2¹ = 201022021009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201022021051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251906896 + ... + 251907693.

It is an arithmetic number, because the mean of its divisors is an integer number (20152583600).

Almost surely, 2^201022021011 is an apocalyptic number.

201022021011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201022021011 is a deficient number, since it is larger than the sum of its proper divisors (121419316589).

201022021011 is a wasteful number, since it uses less digits than its factorization.

201022021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503814618.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201022021011 its reverse (110120220102), we get a palindrome (311142241113).

The spelling of 201022021011 in words is "two hundred one billion, twenty-two million, twenty-one thousand, eleven".