221000301221100 has 36 divisors (see below), whose sum is σ = 639427538200584. Its totient is φ = 58933413658880.

The previous prime is 221000301221081. The next prime is 221000301221101. The reversal of 221000301221100 is 1122103000122.

It is a super-2 number, since 2×221000301221100² (a number of 29 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 221000301221100.

It is not an unprimeable number, because it can be changed into a prime (221000301221101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368333835069 + ... + 368333835668.

Almost surely, 2^{221000301221100} is an apocalyptic number.

221000301221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221000301221100 is an abundant number, since it is smaller than the sum of its proper divisors (418427236979484).

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

221000301221100 is a wasteful number, since it uses less digits than its factorization.

221000301221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736667670754 (or 736667670747 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 221000301221100 its reverse (1122103000122), we get a palindrome (222122404221222).

The spelling of 221000301221100 in words is "two hundred twenty-one trillion, three hundred one million, two hundred twenty-one thousand, one hundred".