221101212201000 has 64 divisors (see below), whose sum is σ = 689835782076480. Its totient is φ = 58960323252800.

The previous prime is 221101212200971. The next prime is 221101212201007. The reversal of 221101212201000 is 102212101122.

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

It is not an unprimeable number, because it can be changed into a prime (221101212201007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36850199034 + ... + 36850205033.

It is an arithmetic number, because the mean of its divisors is an integer number (10778684094945).

Almost surely, 2^{221101212201000} is an apocalyptic number.

221101212201000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221101212201000 is an abundant number, since it is smaller than the sum of its proper divisors (468734569875480).

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

221101212201000 is a wasteful number, since it uses less digits than its factorization.

221101212201000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73700404091 (or 73700404077 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221101212201000 its reverse (102212101122), we get a palindrome (221203424302122).

The spelling of 221101212201000 in words is "two hundred twenty-one trillion, one hundred one billion, two hundred twelve million, two hundred one thousand".