221200020102 has 16 divisors (see below), whose sum is σ = 452688413760.
Its totient is φ = 72018611112.
The previous prime is 221200020029. The next prime is 221200020103. The reversal of 221200020102 is 201020002122.
Adding to 221200020102 its reverse (201020002122), we get a palindrome (422220022224).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (221200020103) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428681952 + ... + 428682467.
It is an arithmetic number, because the mean of its divisors is an integer number (28293025860).
Almost surely, 2221200020102 is an apocalyptic number.
221200020102 is an abundant number, since it is smaller than the sum of its proper divisors (231488393658).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
221200020102 is a wasteful number, since it uses less digits than its factorization.
221200020102 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 857364467.
The product of its (nonzero) digits is 32, while the sum is 12.
The spelling of 221200020102 in words is "two hundred twenty-one billion, two hundred million, twenty thousand, one hundred two".