212200112121 has 8 divisors (see below), whose sum is σ = 283514457024. Its totient is φ = 141176254320.

The previous prime is 212200112101. The next prime is 212200112149. The reversal of 212200112121 is 121211002212.

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

It is not a de Polignac number, because 212200112121 - 2⁶ = 212200112057 is a prime.

It is a super-2 number, since 2×212200112121² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212200112121.

It is not an unprimeable number, because it can be changed into a prime (212200112101) 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, 72620070 + ... + 72622991.

It is an arithmetic number, because the mean of its divisors is an integer number (35439307128).

Almost surely, 2^212200112121 is an apocalyptic number.

It is an amenable number.

212200112121 is a deficient number, since it is larger than the sum of its proper divisors (71314344903).

212200112121 is a wasteful number, since it uses less digits than its factorization.

212200112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145243551.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212200112121 its reverse (121211002212), we get a palindrome (333411114333).

The spelling of 212200112121 in words is "two hundred twelve billion, two hundred million, one hundred twelve thousand, one hundred twenty-one".