1222154170 has 16 divisors (see below), whose sum is σ = 2251038240. Its totient is φ = 477492624.

The previous prime is 1222154069. The next prime is 1222154239. The reversal of 1222154170 is 714512221.

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, 1420680 + ... + 1421539.

It is an arithmetic number, because the mean of its divisors is an integer number (140689890).

Almost surely, 2^1222154170 is an apocalyptic number.

1222154170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222154170 is a deficient number, since it is larger than the sum of its proper divisors (1028884070).

1222154170 is a wasteful number, since it uses less digits than its factorization.

1222154170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842269.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1222154170 is about 34959.3216467368. The cubic root of 1222154170 is about 1069.1582660086.

Adding to 1222154170 its reverse (714512221), we get a palindrome (1936666391).

The spelling of 1222154170 in words is "one billion, two hundred twenty-two million, one hundred fifty-four thousand, one hundred seventy".