2110421220 has 48 divisors (see below), whose sum is σ = 5914301568. Its totient is φ = 562291200.

The previous prime is 2110421197. The next prime is 2110421227. The reversal of 2110421220 is 221240112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2110421220.

It is not an unprimeable number, because it can be changed into a prime (2110421227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57417 + ... + 86703.

It is an arithmetic number, because the mean of its divisors is an integer number (123214616).

Almost surely, 2^2110421220 is an apocalyptic number.

2110421220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2110421220 is an abundant number, since it is smaller than the sum of its proper divisors (3803880348).

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

2110421220 is a wasteful number, since it uses less digits than its factorization.

2110421220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30500 (or 30498 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2110421220 is about 45939.3210659452. The cubic root of 2110421220 is about 1282.6939558999.

Adding to 2110421220 its reverse (221240112), we get a palindrome (2331661332).

It can be divided in two parts, 21104 and 21220, that added together give a palindrome (42324).

The spelling of 2110421220 in words is "two billion, one hundred ten million, four hundred twenty-one thousand, two hundred twenty".