1142857221500 has 48 divisors (see below), whose sum is σ = 2496111430176. Its totient is φ = 457122512000.

The previous prime is 1142857221491. The next prime is 1142857221529. The reversal of 1142857221500 is 51227582411.

It is a super-2 number, since 2×1142857221500² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 16642235 + ... + 16710765.

It is an arithmetic number, because the mean of its divisors is an integer number (52002321462).

Almost surely, 2^{1142857221500} is an apocalyptic number.

1142857221500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142857221500 is an abundant number, since it is smaller than the sum of its proper divisors (1353254208676).

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

1142857221500 is a wasteful number, since it uses less digits than its factorization.

1142857221500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101903 (or 101891 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 38.

The spelling of 1142857221500 in words is "one trillion, one hundred forty-two billion, eight hundred fifty-seven million, two hundred twenty-one thousand, five hundred".