211420212420 has 24 divisors (see below), whose sum is σ = 591976594944. Its totient is φ = 56378723296.

The previous prime is 211420212349. The next prime is 211420212481. The reversal of 211420212420 is 24212024112.

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, 1761835044 + ... + 1761835163.

It is an arithmetic number, because the mean of its divisors is an integer number (24665691456).

Almost surely, 2^211420212420 is an apocalyptic number.

211420212420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211420212420 is an abundant number, since it is smaller than the sum of its proper divisors (380556382524).

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

211420212420 is a wasteful number, since it uses less digits than its factorization.

211420212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3523670219 (or 3523670217 counting only the distinct ones).

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

Adding to 211420212420 its reverse (24212024112), we get a palindrome (235632236532).

The spelling of 211420212420 in words is "two hundred eleven billion, four hundred twenty million, two hundred twelve thousand, four hundred twenty".