1022221221210 has 128 divisors (see below), whose sum is σ = 3115681113600. Its totient is φ = 233625047040.

The previous prime is 1022221221181. The next prime is 1022221221223. The reversal of 1022221221210 is 121221222201.

It is a happy number.

1022221221210 is a `hidden beast` number, since 1 + 0 + 222 + 212 + 21 + 210 = 666.

1022221221210 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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 63 ways as a sum of consecutive naturals, for example, 21387940 + ... + 21435680.

It is an arithmetic number, because the mean of its divisors is an integer number (24341258700).

Almost surely, 2^{1022221221210} is an apocalyptic number.

1022221221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1022221221210 is an abundant number, since it is smaller than the sum of its proper divisors (2093459892390).

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

1022221221210 is a wasteful number, since it uses less digits than its factorization.

1022221221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59093 (or 59087 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1022221221210 its reverse (121221222201), we get a palindrome (1143442443411).

Subtracting from 1022221221210 its reverse (121221222201), we obtain a palindrome (900999999009).

The spelling of 1022221221210 in words is "one trillion, twenty-two billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred ten".