202111213420 has 24 divisors (see below), whose sum is σ = 424470690000. Its totient is φ = 80837410752.

The previous prime is 202111213397. The next prime is 202111213471. The reversal of 202111213420 is 24312111202.

It is a super-4 number, since 4×202111213420⁴ (a number of 46 digits) contains 4444 as substring.

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, 204795 + ... + 667954.

It is an arithmetic number, because the mean of its divisors is an integer number (17686278750).

Almost surely, 2^202111213420 is an apocalyptic number.

202111213420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202111213420 is an abundant number, since it is smaller than the sum of its proper divisors (222359476580).

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

202111213420 is a wasteful number, since it uses less digits than its factorization.

202111213420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884337 (or 884335 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 202111213420 its reverse (24312111202), we get a palindrome (226423324622).

The spelling of 202111213420 in words is "two hundred two billion, one hundred eleven million, two hundred thirteen thousand, four hundred twenty".