1211340040212 has 24 divisors (see below), whose sum is σ = 2826627783616. Its totient is φ = 403756057728.

The previous prime is 1211340040201. The next prime is 1211340040223. The reversal of 1211340040212 is 2120400431121.

It is an interprime number because it is at equal distance from previous prime (1211340040201) and next prime (1211340040223).

It is a congruent number.

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, 2783173 + ... + 3188844.

Almost surely, 2^{1211340040212} is an apocalyptic number.

1211340040212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211340040212 is an abundant number, since it is smaller than the sum of its proper divisors (1615287743404).

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

1211340040212 is a wasteful number, since it uses less digits than its factorization.

1211340040212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5988927 (or 5988925 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 1211340040212 its reverse (2120400431121), we get a palindrome (3331740471333).

The spelling of 1211340040212 in words is "one trillion, two hundred eleven billion, three hundred forty million, forty thousand, two hundred twelve".