211202221220220 has 24 divisors (see below), whose sum is σ = 591366219416784. Its totient is φ = 56320592325376.

The previous prime is 211202221220131. The next prime is 211202221220233. The reversal of 211202221220220 is 22022122202112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1760018510109 + ... + 1760018510228.

It is an arithmetic number, because the mean of its divisors is an integer number (24640259142366).

Almost surely, 2^{211202221220220} is an apocalyptic number.

211202221220220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211202221220220 is an abundant number, since it is smaller than the sum of its proper divisors (380163998196564).

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

211202221220220 is a wasteful number, since it uses less digits than its factorization.

211202221220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3520037020349 (or 3520037020347 counting only the distinct ones).

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

Adding to 211202221220220 its reverse (22022122202112), we get a palindrome (233224343422332).

The spelling of 211202221220220 in words is "two hundred eleven trillion, two hundred two billion, two hundred twenty-one million, two hundred twenty thousand, two hundred twenty".