212202221220121 has 8 divisors (see below), whose sum is σ = 231601658579424. Its totient is φ = 192820838250720.

The previous prime is 212202221220079. The next prime is 212202221220127. The reversal of 212202221220121 is 121022122202212.

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 212202221220121 - 2²⁷ = 212202087002393 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212202221220092 and 212202221220101.

It is not an unprimeable number, because it can be changed into a prime (212202221220127) 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, 4513572895 + ... + 4513619908.

It is an arithmetic number, because the mean of its divisors is an integer number (28950207322428).

Almost surely, 2^{212202221220121} is an apocalyptic number.

It is an amenable number.

212202221220121 is a deficient number, since it is larger than the sum of its proper divisors (19399437359303).

212202221220121 is a wasteful number, since it uses less digits than its factorization.

212202221220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9027194951.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 212202221220121 its reverse (121022122202212), we get a palindrome (333224343422333).

The spelling of 212202221220121 in words is "two hundred twelve trillion, two hundred two billion, two hundred twenty-one million, two hundred twenty thousand, one hundred twenty-one".