201020021220111 has 16 divisors (see below), whose sum is σ = 277269578060160. Its totient is φ = 129391925372640.

The previous prime is 201020021220097. The next prime is 201020021220119. The reversal of 201020021220111 is 111022120020102.

It is not a de Polignac number, because 201020021220111 - 2¹¹ = 201020021218063 is a prime.

It is a super-2 number, since 2×201020021220111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201020021220119) 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, 44298456 + ... + 48625026.

It is an arithmetic number, because the mean of its divisors is an integer number (17329348628760).

Almost surely, 2^{201020021220111} is an apocalyptic number.

201020021220111 is a deficient number, since it is larger than the sum of its proper divisors (76249556840049).

201020021220111 is a wasteful number, since it uses less digits than its factorization.

201020021220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4860646.

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

Adding to 201020021220111 its reverse (111022120020102), we get a palindrome (312042141240213).

The spelling of 201020021220111 in words is "two hundred one trillion, twenty billion, twenty-one million, two hundred twenty thousand, one hundred eleven".