220021110212 has 6 divisors (see below), whose sum is σ = 385036942878. Its totient is φ = 110010555104.

The previous prime is 220021110209. The next prime is 220021110269. The reversal of 220021110212 is 212011120022.

It can be written as a sum of positive squares in only one way, i.e., 148676563396 + 71344546816 = 385586^2 + 267104^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27502638773 + ... + 27502638780.

It is an arithmetic number, because the mean of its divisors is an integer number (64172823813).

Almost surely, 2^220021110212 is an apocalyptic number.

It is an amenable number.

220021110212 is a deficient number, since it is larger than the sum of its proper divisors (165015832666).

220021110212 is a wasteful number, since it uses less digits than its factorization.

220021110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55005277557 (or 55005277555 counting only the distinct ones).

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

Adding to 220021110212 its reverse (212011120022), we get a palindrome (432032230234).

The spelling of 220021110212 in words is "two hundred twenty billion, twenty-one million, one hundred ten thousand, two hundred twelve".