1212401501000 has 64 divisors (see below), whose sum is σ = 2871200666880. Its totient is φ = 479117668800.

The previous prime is 1212401500987. The next prime is 1212401501027. The reversal of 1212401501000 is 1051042121.

It is a self number, because there is not a number n which added to its sum of digits gives 1212401501000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7220624 + ... + 7386623.

It is an arithmetic number, because the mean of its divisors is an integer number (44862510420).

Almost surely, 2^{1212401501000} is an apocalyptic number.

1212401501000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212401501000 is an abundant number, since it is smaller than the sum of its proper divisors (1658799165880).

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

1212401501000 is a wasteful number, since it uses less digits than its factorization.

1212401501000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14607351 (or 14607337 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 1212401501000 its reverse (1051042121), we get a palindrome (1213452543121).

The spelling of 1212401501000 in words is "one trillion, two hundred twelve billion, four hundred one million, five hundred one thousand".