201021223011 has 96 divisors (see below), whose sum is σ = 341242675200. Its totient is φ = 104549175360.

The previous prime is 201021222971. The next prime is 201021223027. The reversal of 201021223011 is 110322120102.

It is not a de Polignac number, because 201021223011 - 2⁶ = 201021222947 is a prime.

It is a super-2 number, since 2×201021223011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201021223111) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 12026686 + ... + 12043388.

It is an arithmetic number, because the mean of its divisors is an integer number (3554611200).

Almost surely, 2^201021223011 is an apocalyptic number.

201021223011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201021223011 is a deficient number, since it is larger than the sum of its proper divisors (140221452189).

201021223011 is a wasteful number, since it uses less digits than its factorization.

201021223011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16909 (or 16902 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201021223011 its reverse (110322120102), we get a palindrome (311343343113).

The spelling of 201021223011 in words is "two hundred one billion, twenty-one million, two hundred twenty-three thousand, eleven".