1021230455355 has 96 divisors (see below), whose sum is σ = 1935675076608. Its totient is φ = 493958995200.

The previous prime is 1021230455159. The next prime is 1021230455363. The reversal of 1021230455355 is 5535540321201.

1021230455355 is a `hidden beast` number, since 1 + 0 + 21 + 2 + 30 + 4 + 553 + 55 = 666.

1021230455355 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1021230455355 - 2¹⁹ = 1021229931067 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 651709782 + ... + 651711348.

It is an arithmetic number, because the mean of its divisors is an integer number (20163282048).

Almost surely, 2^{1021230455355} is an apocalyptic number.

1021230455355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1021230455355 is a deficient number, since it is larger than the sum of its proper divisors (914444621253).

1021230455355 is a wasteful number, since it uses less digits than its factorization.

1021230455355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3897 (or 3894 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 36.

Adding to 1021230455355 its reverse (5535540321201), we get a palindrome (6556770776556).

The spelling of 1021230455355 in words is "one trillion, twenty-one billion, two hundred thirty million, four hundred fifty-five thousand, three hundred fifty-five".