211010201202220 has 144 divisors (see below), whose sum is σ = 522836259865920. Its totient is φ = 71312604249600.

The previous prime is 211010201202209. The next prime is 211010201202277. The reversal of 211010201202220 is 22202102010112.

It is a happy number.

It is a super-2 number, since 2×211010201202220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211010201202194 and 211010201202203.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 337916446 + ... + 338540314.

It is an arithmetic number, because the mean of its divisors is an integer number (3630807360180).

Almost surely, 2^{211010201202220} is an apocalyptic number.

211010201202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211010201202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (261418129932960).

211010201202220 is an abundant number, since it is smaller than the sum of its proper divisors (311826058663700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211010201202220 is a wasteful number, since it uses less digits than its factorization.

211010201202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 628824 (or 628815 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211010201202220 its reverse (22202102010112), we get a palindrome (233212303212332).

The spelling of 211010201202220 in words is "two hundred eleven trillion, ten billion, two hundred one million, two hundred two thousand, two hundred twenty".