211202112112220 has 48 divisors (see below), whose sum is σ = 471399713281728. Its totient is φ = 79209058698240.

The previous prime is 211202112112133. The next prime is 211202112112241. The reversal of 211202112112220 is 22211211202112.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 211202112112192 and 211202112112201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1180866251 + ... + 1181045090.

It is an arithmetic number, because the mean of its divisors is an integer number (9820827360036).

Almost surely, 2^{211202112112220} is an apocalyptic number.

211202112112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211202112112220 is an abundant number, since it is smaller than the sum of its proper divisors (260197601169508).

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

211202112112220 is a wasteful number, since it uses less digits than its factorization.

211202112112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361911630 (or 2361911628 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211202112112220 its reverse (22211211202112), we get a palindrome (233413323314332).

The spelling of 211202112112220 in words is "two hundred eleven trillion, two hundred two billion, one hundred twelve million, one hundred twelve thousand, two hundred twenty".