212054215502 has 32 divisors (see below), whose sum is σ = 326469255840. Its totient is φ = 103263189120.

The previous prime is 212054215487. The next prime is 212054215519. The reversal of 212054215502 is 205512450212.

It is a happy number.

212054215502 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212054215502² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8688188 + ... + 8712560.

It is an arithmetic number, because the mean of its divisors is an integer number (10202164245).

Almost surely, 2^212054215502 is an apocalyptic number.

212054215502 is a deficient number, since it is larger than the sum of its proper divisors (114415040338).

212054215502 is a wasteful number, since it uses less digits than its factorization.

212054215502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25028.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 212054215502 its reverse (205512450212), we get a palindrome (417566665714).

The spelling of 212054215502 in words is "two hundred twelve billion, fifty-four million, two hundred fifteen thousand, five hundred two".