2212155402 has 8 divisors (see below), whose sum is σ = 4424310816. Its totient is φ = 737385132.

The previous prime is 2212155401. The next prime is 2212155509. The reversal of 2212155402 is 2045512122.

It is a sphenic number, since it is the product of 3 distinct primes.

2212155402 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (2212155401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184346278 + ... + 184346289.

It is an arithmetic number, because the mean of its divisors is an integer number (553038852).

Almost surely, 2^2212155402 is an apocalyptic number.

2212155402 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2212155402 is a wasteful number, since it uses less digits than its factorization.

2212155402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368692572.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2212155402 is about 47033.5561275139. The cubic root of 2212155402 is about 1302.9823839209.

Adding to 2212155402 its reverse (2045512122), we get a palindrome (4257667524).

The spelling of 2212155402 in words is "two billion, two hundred twelve million, one hundred fifty-five thousand, four hundred two".