1021143233154 has 96 divisors (see below), whose sum is σ = 2339192338560. Its totient is φ = 296585470720.

The previous prime is 1021143233147. The next prime is 1021143233161. The reversal of 1021143233154 is 4513323411201.

It is an interprime number because it is at equal distance from previous prime (1021143233147) and next prime (1021143233161).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2707387 + ... + 3061409.

It is an arithmetic number, because the mean of its divisors is an integer number (24366586860).

Almost surely, 2^{1021143233154} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1021143233154, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1169596169280).

1021143233154 is an abundant number, since it is smaller than the sum of its proper divisors (1318049105406).

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

1021143233154 is a wasteful number, since it uses less digits than its factorization.

1021143233154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354216 (or 354205 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 1021143233154 its reverse (4513323411201), we get a palindrome (5534466644355).

The spelling of 1021143233154 in words is "one trillion, twenty-one billion, one hundred forty-three million, two hundred thirty-three thousand, one hundred fifty-four".