1212120222012 has 72 divisors (see below), whose sum is σ = 3655600685520. Its totient is φ = 346320061920.

The previous prime is 1212120221989. The next prime is 1212120222023. The reversal of 1212120222012 is 2102220212121.

It is a happy number.

It is a super-2 number, since 2×1212120222012² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 114518539 + ... + 114529122.

Almost surely, 2^{1212120222012} is an apocalyptic number.

1212120222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1212120222012 is an abundant number, since it is smaller than the sum of its proper divisors (2443480463508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212120222012 is a wasteful number, since it uses less digits than its factorization.

1212120222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229047688 (or 229047673 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1212120222012 its reverse (2102220212121), we get a palindrome (3314340434133).

The spelling of 1212120222012 in words is "one trillion, two hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, twelve".