1220154000 has 160 divisors (see below), whose sum is σ = 4236645504. Its totient is φ = 300326400.

The previous prime is 1220153959. The next prime is 1220154053. The reversal of 1220154000 is 4510221.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70179 + ... + 85821.

Almost surely, 2^1220154000 is an apocalyptic number.

1220154000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220154000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2118322752).

1220154000 is an abundant number, since it is smaller than the sum of its proper divisors (3016491504).

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

1220154000 is a wasteful number, since it uses less digits than its factorization.

1220154000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15682 (or 15666 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1220154000 is about 34930.7028271691. The cubic root of 1220154000 is about 1068.5746882514.

Adding to 1220154000 its reverse (4510221), we get a palindrome (1224664221).

The spelling of 1220154000 in words is "one billion, two hundred twenty million, one hundred fifty-four thousand".