1022121140 has 12 divisors (see below), whose sum is σ = 2146454436. Its totient is φ = 408848448.

The previous prime is 1022121097. The next prime is 1022121151. The reversal of 1022121140 is 411212201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 444872464 + 577248676 = 21092^2 + 24026^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25553009 + ... + 25553048.

It is an arithmetic number, because the mean of its divisors is an integer number (178871203).

Almost surely, 2^1022121140 is an apocalyptic number.

1022121140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1022121140 is an abundant number, since it is smaller than the sum of its proper divisors (1124333296).

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

1022121140 is a wasteful number, since it uses less digits than its factorization.

1022121140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51106066 (or 51106064 counting only the distinct ones).

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

The square root of 1022121140 is about 31970.6293338120. The cubic root of 1022121140 is about 1007.3200001895.

Adding to 1022121140 its reverse (411212201), we get a palindrome (1433333341).

The spelling of 1022121140 in words is "one billion, twenty-two million, one hundred twenty-one thousand, one hundred forty".