1156201222 has 24 divisors (see below), whose sum is σ = 1946877408. Its totient is φ = 514359120.

The previous prime is 1156201219. The next prime is 1156201231. The reversal of 1156201222 is 2221026511.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1156201193 and 1156201202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39453 + ... + 62200.

It is an arithmetic number, because the mean of its divisors is an integer number (81119892).

Almost surely, 2^1156201222 is an apocalyptic number.

1156201222 is a deficient number, since it is larger than the sum of its proper divisors (790676186).

1156201222 is a wasteful number, since it uses less digits than its factorization.

1156201222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101724 (or 101713 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 1156201222 is about 34002.9590182972. The cubic root of 1156201222 is about 1049.5693538604.

Adding to 1156201222 its reverse (2221026511), we get a palindrome (3377227733).

The spelling of 1156201222 in words is "one billion, one hundred fifty-six million, two hundred one thousand, two hundred twenty-two".