212222142544421 has 8 divisors (see below), whose sum is σ = 212463354090624. Its totient is φ = 211980932966880.

The previous prime is 212222142544411. The next prime is 212222142544493. The reversal of 212222142544421 is 124445241222212.

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-212222142544421 is a prime.

It is a super-3 number, since 3×212222142544421³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222142544411) 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, 400300100 + ... + 400829906.

It is an arithmetic number, because the mean of its divisors is an integer number (26557919261328).

Almost surely, 2^{212222142544421} is an apocalyptic number.

It is an amenable number.

212222142544421 is a deficient number, since it is larger than the sum of its proper divisors (241211546203).

212222142544421 is an equidigital number, since it uses as much as digits as its factorization.

212222142544421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984331.

The product of its digits is 163840, while the sum is 38.

Adding to 212222142544421 its reverse (124445241222212), we get a palindrome (336667383766633).

The spelling of 212222142544421 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred forty-two million, five hundred forty-four thousand, four hundred twenty-one".