221204223240000 has 4480 divisors, whose sum is σ = 1024158609137664. Its totient is φ = 40642560000000.

The previous prime is 221204223239981. The next prime is 221204223240097. The reversal of 221204223240000 is 42322402122.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 639 ways as a sum of consecutive naturals, for example, 315555239650 + ... + 315555240350.

Almost surely, 2^{221204223240000} is an apocalyptic number.

221204223240000 is a gapful number since it is divisible by the number (20) 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 221204223240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512079304568832).

221204223240000 is an abundant number, since it is smaller than the sum of its proper divisors (802954385897664).

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

221204223240000 is a wasteful number, since it uses less digits than its factorization.

221204223240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 221204223240000 its reverse (42322402122), we get a palindrome (221246545642122).

The spelling of 221204223240000 in words is "two hundred twenty-one trillion, two hundred four billion, two hundred twenty-three million, two hundred forty thousand".