1212001021222 has 8 divisors (see below), whose sum is σ = 1821894470136. Its totient is φ = 604702864512.

The previous prime is 1212001021213. The next prime is 1212001021289. The reversal of 1212001021222 is 2221201002121.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 1212001021196 and 1212001021205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 648821883 + ... + 648823750.

It is an arithmetic number, because the mean of its divisors is an integer number (227736808767).

Almost surely, 2^{1212001021222} is an apocalyptic number.

1212001021222 is a deficient number, since it is larger than the sum of its proper divisors (609893448914).

1212001021222 is a wasteful number, since it uses less digits than its factorization.

1212001021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1297646102.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1212001021222 its reverse (2221201002121), we get a palindrome (3433202023343).

The spelling of 1212001021222 in words is "one trillion, two hundred twelve billion, one million, twenty-one thousand, two hundred twenty-two".