211202210120220 has 144 divisors (see below), whose sum is σ = 699184601256960. Its totient is φ = 51178756464000.

The previous prime is 211202210120107. The next prime is 211202210120233. The reversal of 211202210120220 is 22021012202112.

It is a happy number.

211202210120220 is a `hidden beast` number, since 2 + 11 + 202 + 210 + 1 + 20 + 220 = 666.

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 = 211202210120193 and 211202210120202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18030640 + ... + 27340599.

It is an arithmetic number, because the mean of its divisors is an integer number (4855448619840).

Almost surely, 2^{211202210120220} is an apocalyptic number.

211202210120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211202210120220 is an abundant number, since it is smaller than the sum of its proper divisors (487982391136740).

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

211202210120220 is a wasteful number, since it uses less digits than its factorization.

211202210120220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45373616 (or 45373611 counting only the distinct ones).

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

Adding to 211202210120220 its reverse (22021012202112), we get a palindrome (233223222322332).

The spelling of 211202210120220 in words is "two hundred eleven trillion, two hundred two billion, two hundred ten million, one hundred twenty thousand, two hundred twenty".