1222013142 has 80 divisors (see below), whose sum is σ = 3313522080. Its totient is φ = 328603392.

The previous prime is 1222013137. The next prime is 1222013147. The reversal of 1222013142 is 2413102221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1222013137) and next prime (1222013147).

It is a super-2 number, since 2×1222013142² = 2986632238441424328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222013147) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12417 + ... + 50972.

It is an arithmetic number, because the mean of its divisors is an integer number (41419026).

Almost surely, 2^1222013142 is an apocalyptic number.

1222013142 is an abundant number, since it is smaller than the sum of its proper divisors (2091508938).

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

1222013142 is a wasteful number, since it uses less digits than its factorization.

1222013142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63427 (or 63418 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1222013142 is about 34957.3045585611. The cubic root of 1222013142 is about 1069.1171399773.

Adding to 1222013142 its reverse (2413102221), we get a palindrome (3635115363).

The spelling of 1222013142 in words is "one billion, two hundred twenty-two million, thirteen thousand, one hundred forty-two".