1212212011000 has 128 divisors (see below), whose sum is σ = 2905574031360. Its totient is φ = 473113872000.

The previous prime is 1212212010973. The next prime is 1212212011013. The reversal of 1212212011000 is 1102122121.

It is a super-2 number, since 2×1212212011000² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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, 42598777 + ... + 42627223.

It is an arithmetic number, because the mean of its divisors is an integer number (22699797120).

Almost surely, 2^{1212212011000} is an apocalyptic number.

1212212011000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212212011000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1452787015680).

1212212011000 is an abundant number, since it is smaller than the sum of its proper divisors (1693362020360).

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

1212212011000 is a wasteful number, since it uses less digits than its factorization.

1212212011000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29502 (or 29488 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212212011000 its reverse (1102122121), we get a palindrome (1213314133121).

The spelling of 1212212011000 in words is "one trillion, two hundred twelve billion, two hundred twelve million, eleven thousand".