10221111001200 has 480 divisors, whose sum is σ = 37897266562560. Its totient is φ = 2327275929600.

The previous prime is 10221111001177. The next prime is 10221111001207. The reversal of 10221111001200 is 210011112201.

It is a super-2 number, since 2×10221111001200² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221111001207) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 109236036 + ... + 109329564.

It is an arithmetic number, because the mean of its divisors is an integer number (78952638672).

Almost surely, 2^{10221111001200} is an apocalyptic number.

10221111001200 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 10221111001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18948633281280).

10221111001200 is an abundant number, since it is smaller than the sum of its proper divisors (27676155561360).

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

10221111001200 is a wasteful number, since it uses less digits than its factorization.

10221111001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94065 (or 94054 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 10221111001200 its reverse (210011112201), we get a palindrome (10431122113401).

The spelling of 10221111001200 in words is "ten trillion, two hundred twenty-one billion, one hundred eleven million, one thousand, two hundred".