221022021121000 has 64 divisors (see below), whose sum is σ = 564208941216960. Its totient is φ = 80371644040000.

The previous prime is 221022021120997. The next prime is 221022021121087. The reversal of 221022021121000 is 121120220122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10046444506 + ... + 10046466505.

It is an arithmetic number, because the mean of its divisors is an integer number (8815764706515).

Almost surely, 2^{221022021121000} is an apocalyptic number.

221022021121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221022021121000 is an abundant number, since it is smaller than the sum of its proper divisors (343186920095960).

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

221022021121000 is a wasteful number, since it uses less digits than its factorization.

221022021121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20092911043 (or 20092911029 counting only the distinct ones).

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

Adding to 221022021121000 its reverse (121120220122), we get a palindrome (221143141341122).

The spelling of 221022021121000 in words is "two hundred twenty-one trillion, twenty-two billion, twenty-one million, one hundred twenty-one thousand".