211211102202220 has 12 divisors (see below), whose sum is σ = 443543314624704. Its totient is φ = 84484440880880.

The previous prime is 211211102202197. The next prime is 211211102202251. The reversal of 211211102202220 is 22202201112112.

It is a super-2 number, since 2×211211102202220² (a number of 29 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 5280277555036 + ... + 5280277555075.

It is an arithmetic number, because the mean of its divisors is an integer number (36961942885392).

Almost surely, 2^{211211102202220} is an apocalyptic number.

211211102202220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211211102202220 is an abundant number, since it is smaller than the sum of its proper divisors (232332212422484).

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

211211102202220 is a wasteful number, since it uses less digits than its factorization.

211211102202220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10560555110120 (or 10560555110118 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 211211102202220 its reverse (22202201112112), we get a palindrome (233413303314332).

The spelling of 211211102202220 in words is "two hundred eleven trillion, two hundred eleven billion, one hundred two million, two hundred two thousand, two hundred twenty".