221022020012210 has 16 divisors (see below), whose sum is σ = 397918871251992. Its totient is φ = 88391200176000.

The previous prime is 221022020012197. The next prime is 221022020012251. The reversal of 221022020012210 is 12210020220122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 174417955014121 + 46604064998089 = 13206739^2 + 6826717^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2200925891 + ... + 2201026310.

Almost surely, 2^{221022020012210} is an apocalyptic number.

221022020012210 is a deficient number, since it is larger than the sum of its proper divisors (176896851239782).

221022020012210 is a wasteful number, since it uses less digits than its factorization.

221022020012210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4401957229.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221022020012210 its reverse (12210020220122), we get a palindrome (233232040232332).

The spelling of 221022020012210 in words is "two hundred twenty-one trillion, twenty-two billion, twenty million, twelve thousand, two hundred ten".