221000201022 has 64 divisors (see below), whose sum is σ = 460461040704. Its totient is φ = 70648381440.

The previous prime is 221000201003. The next prime is 221000201029. The reversal of 221000201022 is 220102000122.

It is a junction number, because it is equal to n+sod(n) for n = 221000200989 and 221000201007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221000201029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32684122 + ... + 32690882.

It is an arithmetic number, because the mean of its divisors is an integer number (7194703761).

Almost surely, 2^221000201022 is an apocalyptic number.

221000201022 is an abundant number, since it is smaller than the sum of its proper divisors (239460839682).

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

221000201022 is a wasteful number, since it uses less digits than its factorization.

221000201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8893.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221000201022 its reverse (220102000122), we get a palindrome (441102201144).

Subtracting from 221000201022 its reverse (220102000122), we obtain a square (898200900 = 29970²).

The spelling of 221000201022 in words is "two hundred twenty-one billion, two hundred one thousand, twenty-two".