1211212212000 has 192 divisors, whose sum is σ = 4534778836224. Its totient is φ = 276848486400.

The previous prime is 1211212211981. The next prime is 1211212212017. The reversal of 1211212212000 is 2122121121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7125597 + ... + 7293596.

It is an arithmetic number, because the mean of its divisors is an integer number (23618639772).

Almost surely, 2^{1211212212000} is an apocalyptic number.

1211212212000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211212212000 is an abundant number, since it is smaller than the sum of its proper divisors (3323566624224).

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

1211212212000 is a wasteful number, since it uses less digits than its factorization.

1211212212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14419228 (or 14419210 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1211212212000 its reverse (2122121121), we get a palindrome (1213334333121).

The spelling of 1211212212000 in words is "one trillion, two hundred eleven billion, two hundred twelve million, two hundred twelve thousand".