2212121230 has 32 divisors (see below), whose sum is σ = 4357836288. Its totient is φ = 801808800.

The previous prime is 2212121203. The next prime is 2212121237. The reversal of 2212121230 is 321212122.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2212121237) 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, 1879 + ... + 66541.

It is an arithmetic number, because the mean of its divisors is an integer number (136182384).

Almost surely, 2^2212121230 is an apocalyptic number.

2212121230 is a deficient number, since it is larger than the sum of its proper divisors (2145715058).

2212121230 is a wasteful number, since it uses less digits than its factorization.

2212121230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64992.

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

The square root of 2212121230 is about 47033.1928535582. The cubic root of 2212121230 is about 1302.9756746660.

Adding to 2212121230 its reverse (321212122), we get a palindrome (2533333352).

The spelling of 2212121230 in words is "two billion, two hundred twelve million, one hundred twenty-one thousand, two hundred thirty".