212240400122 has 8 divisors (see below), whose sum is σ = 323112251136. Its totient is φ = 104536316412.

The previous prime is 212240400121. The next prime is 212240400173. The reversal of 212240400122 is 221004042212.

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

It is a super-2 number, since 2×212240400122² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212240400094 and 212240400103.

It is not an unprimeable number, because it can be changed into a prime (212240400121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 791941658 + ... + 791941925.

It is an arithmetic number, because the mean of its divisors is an integer number (40389031392).

Almost surely, 2^212240400122 is an apocalyptic number.

212240400122 is a deficient number, since it is larger than the sum of its proper divisors (110871851014).

212240400122 is a wasteful number, since it uses less digits than its factorization.

212240400122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583883652.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 212240400122 its reverse (221004042212), we get a palindrome (433244442334).

The spelling of 212240400122 in words is "two hundred twelve billion, two hundred forty million, four hundred thousand, one hundred twenty-two".