212621161514 has 4 divisors (see below), whose sum is σ = 318931742274. Its totient is φ = 106310580756.

The previous prime is 212621161451. The next prime is 212621161561. The reversal of 212621161514 is 415161126212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 125374770889 + 87246390625 = 354083^2 + 295375^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53155290377 + ... + 53155290380.

Almost surely, 2^212621161514 is an apocalyptic number.

212621161514 is a deficient number, since it is larger than the sum of its proper divisors (106310580760).

212621161514 is a wasteful number, since it uses less digits than its factorization.

212621161514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106310580759.

The product of its digits is 5760, while the sum is 32.

Adding to 212621161514 its reverse (415161126212), we get a palindrome (627782287726).

The spelling of 212621161514 in words is "two hundred twelve billion, six hundred twenty-one million, one hundred sixty-one thousand, five hundred fourteen".