1022111121210 has 64 divisors (see below), whose sum is σ = 2479646995200. Its totient is φ = 269625438720.

The previous prime is 1022111121197. The next prime is 1022111121253. The reversal of 1022111121210 is 121211112201.

It is a happy number.

It is a super-2 number, since 2×1022111121210² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1022111121210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 537990 + ... + 1527630.

It is an arithmetic number, because the mean of its divisors is an integer number (38744484300).

Almost surely, 2^{1022111121210} is an apocalyptic number.

1022111121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1022111121210 is an abundant number, since it is smaller than the sum of its proper divisors (1457535873990).

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

1022111121210 is a wasteful number, since it uses less digits than its factorization.

1022111121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990023.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1022111121210 its reverse (121211112201), we get a palindrome (1143322233411).

Subtracting from 1022111121210 its reverse (121211112201), we obtain a palindrome (900900009009).

The spelling of 1022111121210 in words is "one trillion, twenty-two billion, one hundred eleven million, one hundred twenty-one thousand, two hundred ten".