1205590390212 has 72 divisors (see below), whose sum is σ = 3046812261024. Its totient is φ = 370861410816.

The previous prime is 1205590390187. The next prime is 1205590390261. The reversal of 1205590390212 is 2120930955021.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8596083 + ... + 8735205.

Almost surely, 2^{1205590390212} is an apocalyptic number.

1205590390212 is a gapful number since it is divisible by the number (12) 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 1205590390212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1523406130512).

1205590390212 is an abundant number, since it is smaller than the sum of its proper divisors (1841221870812).

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

1205590390212 is a wasteful number, since it uses less digits than its factorization.

1205590390212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143429 (or 143414 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 39.

The spelling of 1205590390212 in words is "one trillion, two hundred five billion, five hundred ninety million, three hundred ninety thousand, two hundred twelve".