1021451351156 has 12 divisors (see below), whose sum is σ = 1793856261792. Its totient is φ = 508920990648.

The previous prime is 1021451351119. The next prime is 1021451351171. The reversal of 1021451351156 is 6511531541201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451169960 + ... + 451172223.

It is an arithmetic number, because the mean of its divisors is an integer number (149488021816).

Almost surely, 2^{1021451351156} is an apocalyptic number.

It is an amenable number.

1021451351156 is a deficient number, since it is larger than the sum of its proper divisors (772404910636).

1021451351156 is a wasteful number, since it uses less digits than its factorization.

1021451351156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902342470 (or 902342468 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 35.

Adding to 1021451351156 its reverse (6511531541201), we get a palindrome (7532982892357).

The spelling of 1021451351156 in words is "one trillion, twenty-one billion, four hundred fifty-one million, three hundred fifty-one thousand, one hundred fifty-six".