2100421213 has 24 divisors (see below), whose sum is σ = 2523467520. Its totient is φ = 1739126400.

The previous prime is 2100421207. The next prime is 2100421231. The reversal of 2100421213 is 3121240012.

It is not a de Polignac number, because 2100421213 - 2¹⁷ = 2100290141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100421313) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47298 + ... + 80236.

It is an arithmetic number, because the mean of its divisors is an integer number (105144480).

Almost surely, 2^2100421213 is an apocalyptic number.

It is an amenable number.

2100421213 is a deficient number, since it is larger than the sum of its proper divisors (423046307).

2100421213 is a wasteful number, since it uses less digits than its factorization.

2100421213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33009 (or 32998 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2100421213 is about 45830.3525297373. The cubic root of 2100421213 is about 1280.6647777704.

Adding to 2100421213 its reverse (3121240012), we get a palindrome (5221661225).

The spelling of 2100421213 in words is "two billion, one hundred million, four hundred twenty-one thousand, two hundred thirteen".