1011222140 has 24 divisors (see below), whose sum is σ = 2215896480. Its totient is φ = 386902208.

The previous prime is 1011222131. The next prime is 1011222167. The reversal of 1011222140 is 412221101.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1098695 + ... + 1099614.

It is an arithmetic number, because the mean of its divisors is an integer number (92329020).

Almost surely, 2^1011222140 is an apocalyptic number.

1011222140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011222140 is an abundant number, since it is smaller than the sum of its proper divisors (1204674340).

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

1011222140 is a wasteful number, since it uses less digits than its factorization.

1011222140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2198341 (or 2198339 counting only the distinct ones).

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

The square root of 1011222140 is about 31799.7191811500. The cubic root of 1011222140 is about 1003.7268069890.

Adding to 1011222140 its reverse (412221101), we get a palindrome (1423443241).

The spelling of 1011222140 in words is "one billion, eleven million, two hundred twenty-two thousand, one hundred forty".