2112213402 has 64 divisors (see below), whose sum is σ = 5099794560. Its totient is φ = 644136192.

The previous prime is 2112213401. The next prime is 2112213431. The reversal of 2112213402 is 2043122112.

It is a happy number.

It is a super-2 number, since 2×2112213402² = 8922890911176827208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2112213401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66013 + ... + 92639.

It is an arithmetic number, because the mean of its divisors is an integer number (79684290).

Almost surely, 2^2112213402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112213402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2549897280).

2112213402 is an abundant number, since it is smaller than the sum of its proper divisors (2987581158).

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

2112213402 is a wasteful number, since it uses less digits than its factorization.

2112213402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26764 (or 26758 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2112213402 is about 45958.8228961535. The cubic root of 2112213402 is about 1283.0569435632.

Adding to 2112213402 its reverse (2043122112), we get a palindrome (4155335514).

The spelling of 2112213402 in words is "two billion, one hundred twelve million, two hundred thirteen thousand, four hundred two".