20211103213420 has 24 divisors (see below), whose sum is σ = 48506647712544. Its totient is φ = 6929521101696.

The previous prime is 20211103213409. The next prime is 20211103213421. The reversal of 20211103213420 is 2431230111202.

It is a junction number, because it is equal to n+sod(n) for n = 20211103213391 and 20211103213400.

It is not an unprimeable number, because it can be changed into a prime (20211103213421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72182511337 + ... + 72182511616.

It is an arithmetic number, because the mean of its divisors is an integer number (2021110321356).

Almost surely, 2^{20211103213420} is an apocalyptic number.

20211103213420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20211103213420 is an abundant number, since it is smaller than the sum of its proper divisors (28295544499124).

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

20211103213420 is a wasteful number, since it uses less digits than its factorization.

20211103213420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144365022969 (or 144365022967 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20211103213420 its reverse (2431230111202), we get a palindrome (22642333324622).

The spelling of 20211103213420 in words is "twenty trillion, two hundred eleven billion, one hundred three million, two hundred thirteen thousand, four hundred twenty".