1222012140 has 48 divisors (see below), whose sum is σ = 3423796992. Its totient is φ = 325663936.

The previous prime is 1222012133. The next prime is 1222012163. The reversal of 1222012140 is 412102221.

1222012140 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105307 + ... + 116333.

It is an arithmetic number, because the mean of its divisors is an integer number (71329104).

Almost surely, 2^1222012140 is an apocalyptic number.

1222012140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222012140 is an abundant number, since it is smaller than the sum of its proper divisors (2201784852).

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

1222012140 is a wasteful number, since it uses less digits than its factorization.

1222012140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12886 (or 12884 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1222012140 is about 34957.2902267896. The cubic root of 1222012140 is about 1069.1168477666.

Adding to 1222012140 its reverse (412102221), we get a palindrome (1634114361).

The spelling of 1222012140 in words is "one billion, two hundred twenty-two million, twelve thousand, one hundred forty".