201021220222011 has 80 divisors (see below), whose sum is σ = 350430254775744. Its totient is φ = 112468737862656.

The previous prime is 201021220222001. The next prime is 201021220222033. The reversal of 201021220222011 is 110222022120102.

It is a happy number.

201021220222011 is a `hidden beast` number, since 20 + 1 + 0 + 212 + 202 + 220 + 11 = 666.

It is not a de Polignac number, because 201021220222011 - 2⁹ = 201021220221499 is a prime.

It is a super-2 number, since 2×201021220222011² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201021220222001) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12054400 + ... + 23395533.

Almost surely, 2^{201021220222011} is an apocalyptic number.

201021220222011 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201021220222011 is a deficient number, since it is larger than the sum of its proper divisors (149409034553733).

201021220222011 is a wasteful number, since it uses less digits than its factorization.

201021220222011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35450162 (or 35450153 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 201021220222011 its reverse (110222022120102), we get a palindrome (311243242342113).

The spelling of 201021220222011 in words is "two hundred one trillion, twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, eleven".