1219122301800 has 384 divisors, whose sum is σ = 4187094508800. Its totient is φ = 291485122560.

The previous prime is 1219122301759. The next prime is 1219122301853. The reversal of 1219122301800 is 81032219121.

It is a super-2 number, since 2×1219122301800² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 186720936 + ... + 186727464.

It is an arithmetic number, because the mean of its divisors is an integer number (10903891950).

Almost surely, 2^{1219122301800} is an apocalyptic number.

1219122301800 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 1219122301800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2093547254400).

1219122301800 is an abundant number, since it is smaller than the sum of its proper divisors (2967972207000).

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

1219122301800 is a wasteful number, since it uses less digits than its factorization.

1219122301800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7245 (or 7236 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The spelling of 1219122301800 in words is "one trillion, two hundred nineteen billion, one hundred twenty-two million, three hundred one thousand, eight hundred".