221010221212000 has 192 divisors, whose sum is σ = 598252997579328. Its totient is φ = 79571635200000.

The previous prime is 221010221211961. The next prime is 221010221212049. The reversal of 221010221212000 is 212122010122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 20422137 + ... + 29310136.

It is an arithmetic number, because the mean of its divisors is an integer number (3115901029059).

Almost surely, 2^{221010221212000} is an apocalyptic number.

221010221212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221010221212000 is an abundant number, since it is smaller than the sum of its proper divisors (377242776367328).

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

221010221212000 is a wasteful number, since it uses less digits than its factorization.

221010221212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49732410 (or 49732392 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221010221212000 its reverse (212122010122), we get a palindrome (221222343222122).

The spelling of 221010221212000 in words is "two hundred twenty-one trillion, ten billion, two hundred twenty-one million, two hundred twelve thousand".