1021122222210 has 24 divisors (see below), whose sum is σ = 2654917777980. Its totient is φ = 272299259232.

The previous prime is 1021122222203. The next prime is 1021122222227. The reversal of 1021122222210 is 122222211201.

It is a happy number.

1021122222210 is a `hidden beast` number, since 1 + 0 + 211 + 22 + 222 + 210 = 666.

1021122222210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 871267295889 + 149854926321 = 933417^2 + 387111^2 .

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 11 ways as a sum of consecutive naturals, for example, 5672901145 + ... + 5672901324.

Almost surely, 2^{1021122222210} is an apocalyptic number.

1021122222210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021122222210 is an abundant number, since it is smaller than the sum of its proper divisors (1633795555770).

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

1021122222210 is a wasteful number, since it uses less digits than its factorization.

1021122222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11345802482 (or 11345802479 counting only the distinct ones).

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

Adding to 1021122222210 its reverse (122222211201), we get a palindrome (1143344433411).

The spelling of 1021122222210 in words is "one trillion, twenty-one billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred ten".