211020212222220 has 96 divisors (see below), whose sum is σ = 591495830585856. Its totient is φ = 56211209856000.

The previous prime is 211020212222213. The next prime is 211020212222279. The reversal of 211020212222220 is 22222212020112.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205370745 + ... + 206395695.

It is an arithmetic number, because the mean of its divisors is an integer number (6161414901936).

Almost surely, 2^{211020212222220} is an apocalyptic number.

211020212222220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211020212222220 is an abundant number, since it is smaller than the sum of its proper divisors (380475618363636).

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

211020212222220 is a wasteful number, since it uses less digits than its factorization.

211020212222220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028671 (or 1028669 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 211020212222220 its reverse (22222212020112), we get a palindrome (233242424242332).

The spelling of 211020212222220 in words is "two hundred eleven trillion, twenty billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty".