212221420115 has 8 divisors (see below), whose sum is σ = 254673640080. Its totient is φ = 169771845472.

The previous prime is 212221420043. The next prime is 212221420127. The reversal of 212221420115 is 511024122212.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212221420115 is a prime.

It is a super-2 number, since 2×212221420115² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 480329 + ... + 809418.

It is an arithmetic number, because the mean of its divisors is an integer number (31834205010).

Almost surely, 2^212221420115 is an apocalyptic number.

212221420115 is a deficient number, since it is larger than the sum of its proper divisors (42452219965).

212221420115 is a wasteful number, since it uses less digits than its factorization.

212221420115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322661.

The product of its (nonzero) digits is 640, while the sum is 23.

Adding to 212221420115 its reverse (511024122212), we get a palindrome (723245542327).

The spelling of 212221420115 in words is "two hundred twelve billion, two hundred twenty-one million, four hundred twenty thousand, one hundred fifteen".