1212211001222 has 8 divisors (see below), whose sum is σ = 1958187002016. Its totient is φ = 559482000552.

The previous prime is 1212211001191. The next prime is 1212211001249. The reversal of 1212211001222 is 2221001122121.

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

It is a super-2 number, since 2×1212211001222² (a number of 25 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 1212211001222.

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, 23311749998 + ... + 23311750049.

It is an arithmetic number, because the mean of its divisors is an integer number (244773375252).

Almost surely, 2^{1212211001222} is an apocalyptic number.

1212211001222 is a deficient number, since it is larger than the sum of its proper divisors (745976000794).

1212211001222 is a wasteful number, since it uses less digits than its factorization.

1212211001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46623500062.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1212211001222 its reverse (2221001122121), we get a palindrome (3433212123343).

The spelling of 1212211001222 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one thousand, two hundred twenty-two".