221022211010 has 64 divisors (see below), whose sum is σ = 426742439904. Its totient is φ = 82128076800.

The previous prime is 221022210943. The next prime is 221022211013. The reversal of 221022211010 is 10112220122.

It can be written as a sum of positive squares in 16 ways, for example, as 2861287081 + 218160923929 = 53491^2 + 467077^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221022211013) 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, 4605740 + ... + 4653480.

Almost surely, 2^221022211010 is an apocalyptic number.

221022211010 is a deficient number, since it is larger than the sum of its proper divisors (205720228894).

221022211010 is a wasteful number, since it uses less digits than its factorization.

221022211010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48119.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 221022211010 its reverse (10112220122), we get a palindrome (231134431132).

The spelling of 221022211010 in words is "two hundred twenty-one billion, twenty-two million, two hundred eleven thousand, ten".