2120220 has 36 divisors (see below), whose sum is σ = 6431880. Its totient is φ = 565344.

The previous prime is 2120213. The next prime is 2120221. The reversal of 2120220 is 220212.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5710 + ... + 6069.

2^2120220 is an apocalyptic number.

2120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120220 is an abundant number, since it is smaller than the sum of its proper divisors (4311660).

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

2120220 is a wasteful number, since it uses less digits than its factorization.

2120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11794 (or 11789 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 2120220 is about 1456.0975242064. The cubic root of 2120220 is about 128.4676093120.

Adding to 2120220 its reverse (220212), we get a palindrome (2340432).

The spelling of 2120220 in words is "two million, one hundred twenty thousand, two hundred twenty".