1221462000 has 480 divisors, whose sum is σ = 4828262400. Its totient is φ = 285120000.

The previous prime is 1221461963. The next prime is 1221462001. The reversal of 1221462000 is 2641221.

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 (1221462001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6137901 + ... + 6138099.

It is an arithmetic number, because the mean of its divisors is an integer number (10058880).

Almost surely, 2^1221462000 is an apocalyptic number.

1221462000 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 1221462000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2414131200).

1221462000 is an abundant number, since it is smaller than the sum of its proper divisors (3606800400).

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

1221462000 is a wasteful number, since it uses less digits than its factorization.

1221462000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 251 counting only the distinct ones).

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

The square root of 1221462000 is about 34949.4205960557. The cubic root of 1221462000 is about 1068.9563877604.

The spelling of 1221462000 in words is "one billion, two hundred twenty-one million, four hundred sixty-two thousand".