212221043124151 has 8 divisors (see below), whose sum is σ = 212404034026640. Its totient is φ = 212038065461952.

The previous prime is 212221043124143. The next prime is 212221043124247. The reversal of 212221043124151 is 151421340122212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 212221043124151 - 2³ = 212221043124143 is a prime.

It is a super-2 number, since 2×212221043124151² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212221043124551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28895611 + ... + 35488003.

It is an arithmetic number, because the mean of its divisors is an integer number (26550504253330).

Almost surely, 2^{212221043124151} is an apocalyptic number.

212221043124151 is a deficient number, since it is larger than the sum of its proper divisors (182990902489).

212221043124151 is a wasteful number, since it uses less digits than its factorization.

212221043124151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620145.

The product of its (nonzero) digits is 7680, while the sum is 31.

Adding to 212221043124151 its reverse (151421340122212), we get a palindrome (363642383246363).

The spelling of 212221043124151 in words is "two hundred twelve trillion, two hundred twenty-one billion, forty-three million, one hundred twenty-four thousand, one hundred fifty-one".