1212445404490 has 16 divisors (see below), whose sum is σ = 2219391588960. Its totient is φ = 476758192720.

The previous prime is 1212445404481. The next prime is 1212445404491. The reversal of 1212445404490 is 944045442121.

It is not an unprimeable number, because it can be changed into a prime (1212445404491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1027495516 + ... + 1027496695.

It is an arithmetic number, because the mean of its divisors is an integer number (138711974310).

Almost surely, 2^{1212445404490} is an apocalyptic number.

1212445404490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212445404490 is a deficient number, since it is larger than the sum of its proper divisors (1006946184470).

1212445404490 is a wasteful number, since it uses less digits than its factorization.

1212445404490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054992277.

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 1212445404490 in words is "one trillion, two hundred twelve billion, four hundred forty-five million, four hundred four thousand, four hundred ninety".