1021225356546 has 16 divisors (see below), whose sum is σ = 2071217625408. Its totient is φ = 335613966800.

The previous prime is 1021225356533. The next prime is 1021225356553. The reversal of 1021225356546 is 6456535221201.

It is a junction number, because it is equal to n+sod(n) for n = 1021225356498 and 1021225356507.

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 7 ways as a sum of consecutive naturals, for example, 1198620885 + ... + 1198621736.

It is an arithmetic number, because the mean of its divisors is an integer number (129451101588).

Almost surely, 2^{1021225356546} is an apocalyptic number.

1021225356546 is an abundant number, since it is smaller than the sum of its proper divisors (1049992268862).

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

1021225356546 is a wasteful number, since it uses less digits than its factorization.

1021225356546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397242697.

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 1021225356546 in words is "one trillion, twenty-one billion, two hundred twenty-five million, three hundred fifty-six thousand, five hundred forty-six".