21222233010 has 64 divisors (see below), whose sum is σ = 61737413760.
Its totient is φ = 5144783040.
The previous prime is 21222233003. The next prime is 21222233113. The reversal of 21222233010 is 1033222212.
Adding to 21222233010 its reverse (1033222212), we get a palindrome (22255455222).
It can be divided in two parts, 212 and 22233010, that added together give a palindrome (22233222).
It is a Harshad number since it is a multiple of its sum of digits (18).
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3569797 + ... + 3575736.
It is an arithmetic number, because the mean of its divisors is an integer number (964647090).
Almost surely, 221222233010 is an apocalyptic number.
21222233010 is an abundant number, since it is smaller than the sum of its proper divisors (40515180750).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21222233010 is a wasteful number, since it uses less digits than its factorization.
21222233010 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 7145560 (or 7145554 counting only the distinct ones).
The product of its (nonzero) digits is 288, while the sum is 18.
The spelling of 21222233010 in words is "twenty-one billion, two hundred twenty-two million, two hundred thirty-three thousand, ten".