211012201220220 has 144 divisors (see below), whose sum is σ = 692852620713120. Its totient is φ = 53308345522176.

The previous prime is 211012201220209. The next prime is 211012201220237. The reversal of 211012201220220 is 22022102210112.

It is a happy number.

211012201220220 is a `hidden beast` number, since 2 + 1 + 1 + 0 + 1 + 220 + 1 + 220 + 220 = 666.

It is a super-2 number, since 2×211012201220220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211012201220193 and 211012201220202.

It is a congruent number.

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, 541028517 + ... + 541418396.

It is an arithmetic number, because the mean of its divisors is an integer number (4811476532730).

Almost surely, 2^{211012201220220} is an apocalyptic number.

211012201220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211012201220220 is an abundant number, since it is smaller than the sum of its proper divisors (481840419492900).

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

211012201220220 is a wasteful number, since it uses less digits than its factorization.

211012201220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1082446969 (or 1082446942 counting only the distinct ones).

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

Adding to 211012201220220 its reverse (22022102210112), we get a palindrome (233034303430332).

The spelling of 211012201220220 in words is "two hundred eleven trillion, twelve billion, two hundred one million, two hundred twenty thousand, two hundred twenty".