211450220 has 12 divisors (see below), whose sum is σ = 444045504. Its totient is φ = 84580080.

The previous prime is 211450207. The next prime is 211450237. The reversal of 211450220 is 22054112.

It is a super-2 number, since 2×211450220² = 89422391076096800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5286236 + ... + 5286275.

It is an arithmetic number, because the mean of its divisors is an integer number (37003792).

Almost surely, 2^211450220 is an apocalyptic number.

211450220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211450220 is an abundant number, since it is smaller than the sum of its proper divisors (232595284).

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

211450220 is a wasteful number, since it uses less digits than its factorization.

211450220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10572520 (or 10572518 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 211450220 is about 14541.3279998768. The cubic root of 211450220 is about 595.7573107673.

The spelling of 211450220 in words is "two hundred eleven million, four hundred fifty thousand, two hundred twenty".