1212210012112 has 40 divisors (see below), whose sum is σ = 2562233676192. Its totient is φ = 550991107200.

The previous prime is 1212210012109. The next prime is 1212210012119. The reversal of 1212210012112 is 2112100122121.

It is a super-2 number, since 2×1212210012112² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210012119) 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, 12428238 + ... + 12525394.

Almost surely, 2^{1212210012112} is an apocalyptic number.

It is an amenable number.

1212210012112 is an abundant number, since it is smaller than the sum of its proper divisors (1350023664080).

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

1212210012112 is a wasteful number, since it uses less digits than its factorization.

1212210012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168067 (or 168061 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1212210012112 its reverse (2112100122121), we get a palindrome (3324310134233).

The spelling of 1212210012112 in words is "one trillion, two hundred twelve billion, two hundred ten million, twelve thousand, one hundred twelve".