1022121210 has 64 divisors (see below), whose sum is σ = 2695472640. Its totient is φ = 245993280.

The previous prime is 1022121203. The next prime is 1022121239. The reversal of 1022121210 is 121212201.

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, 34729 + ... + 57011.

It is an arithmetic number, because the mean of its divisors is an integer number (42116760).

Almost surely, 2^1022121210 is an apocalyptic number.

1022121210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1022121210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1347736320).

1022121210 is an abundant number, since it is smaller than the sum of its proper divisors (1673351430).

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

1022121210 is a wasteful number, since it uses less digits than its factorization.

1022121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22443.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1022121210 is about 31970.6304285668. The cubic root of 1022121210 is about 1007.3200231849.

Adding to 1022121210 its reverse (121212201), we get a palindrome (1143333411).

Subtracting from 1022121210 its reverse (121212201), we obtain a palindrome (900909009).

The spelling of 1022121210 in words is "one billion, twenty-two million, one hundred twenty-one thousand, two hundred ten".