211220202 has 16 divisors (see below), whose sum is σ = 423577440. Its totient is φ = 70217232.

The previous prime is 211220153. The next prime is 211220231. The reversal of 211220202 is 202022112.

It is a super-2 number, since 2×211220202² = 89227947465841608, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44952 + ... + 49427.

It is an arithmetic number, because the mean of its divisors is an integer number (26473590).

Almost surely, 2^211220202 is an apocalyptic number.

211220202 is an abundant number, since it is smaller than the sum of its proper divisors (212357238).

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

211220202 is a wasteful number, since it uses less digits than its factorization.

211220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94757.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 211220202 is about 14533.4167352347. The cubic root of 211220202 is about 595.5412084864.

Adding to 211220202 its reverse (202022112), we get a palindrome (413242314).

It can be divided in two parts, 2112 and 20202, that multiplied together give a palindrome (42666624).

The spelling of 211220202 in words is "two hundred eleven million, two hundred twenty thousand, two hundred two".