220201111012021 has 48 divisors (see below), whose sum is σ = 229230069554160. Its totient is φ = 211497152025600.

The previous prime is 220201111011971. The next prime is 220201111012109. The reversal of 220201111012021 is 120210111102022.

It can be written as a sum of positive squares in 8 ways, for example, as 3425960374225 + 216775150637796 = 1850935^2 + 14723286^2 .

It is not a de Polignac number, because 220201111012021 - 2²⁵ = 220201077457589 is a prime.

It is a super-2 number, since 2×220201111012021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220201111011986 and 220201111012004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220201111012921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36475251415 + ... + 36475257451.

It is an arithmetic number, because the mean of its divisors is an integer number (4775626449045).

Almost surely, 2^{220201111012021} is an apocalyptic number.

It is an amenable number.

220201111012021 is a deficient number, since it is larger than the sum of its proper divisors (9028958542139).

220201111012021 is a wasteful number, since it uses less digits than its factorization.

220201111012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7526 (or 7483 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 220201111012021 its reverse (120210111102022), we get a palindrome (340411222114043).

Subtracting from 220201111012021 its reverse (120210111102022), we obtain a palindrome (99990999909999).

The spelling of 220201111012021 in words is "two hundred twenty trillion, two hundred one billion, one hundred eleven million, twelve thousand, twenty-one".