1212111211012 has 24 divisors (see below), whose sum is σ = 2284680144600. Its totient is φ = 559358382336.

The previous prime is 1212111210991. The next prime is 1212111211021. The reversal of 1212111211012 is 2101121112121.

It can be written as a sum of positive squares in 4 ways, for example, as 738059682816 + 474051528196 = 859104^2 + 688514^2 .

It is a super-3 number, since 3×1212111211012³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1236337 + ... + 1988152.

It is an arithmetic number, because the mean of its divisors is an integer number (95195006025).

Almost surely, 2^{1212111211012} is an apocalyptic number.

It is an amenable number.

1212111211012 is a deficient number, since it is larger than the sum of its proper divisors (1072568933588).

1212111211012 is a wasteful number, since it uses less digits than its factorization.

1212111211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3231735 (or 3231733 counting only the distinct ones).

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

Adding to 1212111211012 its reverse (2101121112121), we get a palindrome (3313232323133).

The spelling of 1212111211012 in words is "one trillion, two hundred twelve billion, one hundred eleven million, two hundred eleven thousand, twelve".