1220107158 has 16 divisors (see below), whose sum is σ = 2711349360. Its totient is φ = 406702368.

The previous prime is 1220107099. The next prime is 1220107159. The reversal of 1220107158 is 8517010221.

It is a super-2 number, since 2×1220107158² = 2977322954005673928, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220107159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11297235 + ... + 11297342.

It is an arithmetic number, because the mean of its divisors is an integer number (169459335).

Almost surely, 2^1220107158 is an apocalyptic number.

1220107158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1220107158 is an abundant number, since it is smaller than the sum of its proper divisors (1491242202).

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

1220107158 is a wasteful number, since it uses less digits than its factorization.

1220107158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22594588 (or 22594582 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1220107158 is about 34930.0323217715. The cubic root of 1220107158 is about 1068.5610137982.

Adding to 1220107158 its reverse (8517010221), we get a palindrome (9737117379).

The spelling of 1220107158 in words is "one billion, two hundred twenty million, one hundred seven thousand, one hundred fifty-eight".