221212000311000 has 128 divisors (see below), whose sum is σ = 720189329932800. Its totient is φ = 56425089916800.

The previous prime is 221212000310989. The next prime is 221212000311067. The reversal of 221212000311000 is 113000212122.

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

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, 1602916510 + ... + 1603054509.

It is an arithmetic number, because the mean of its divisors is an integer number (5626479140100).

Almost surely, 2^{221212000311000} is an apocalyptic number.

221212000311000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221212000311000 is an abundant number, since it is smaller than the sum of its proper divisors (498977329621800).

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

221212000311000 is a wasteful number, since it uses less digits than its factorization.

221212000311000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3205971066 (or 3205971052 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 221212000311000 its reverse (113000212122), we get a palindrome (221325000523122).

The spelling of 221212000311000 in words is "two hundred twenty-one trillion, two hundred twelve billion, three hundred eleven thousand".